Editing Unintended consequences (section)

==Types==
<!--Please do NOT add examples, see talk! There are already too many examples. Discuss in talk first before adding an example. Otherwise it will be removed. -->

===Unexpected benefits===
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The creation of "[[no-man's land]]s" during the [[Cold War]], in places such as the border between Eastern and Western Europe, and the [[Korean Demilitarized Zone]], has led to large natural habitats.<ref>{{cite news |url=https://www.independent.co.uk/environment/nature/from-iron-curtain-to-green-belt-how-new-life-came-to-the-death-strip-1686294.html |title=From Iron Curtain to Green Belt: How new life came to the death strip |publisher=Independent.co.uk |date=2009-05-17 |access-date=2010-05-07 |location=London}}</ref><ref>{{cite news |author=Kate Connolly |url=https://www.theguardian.com/travel/2009/jul/04/germany-green-line-iron-curtain |title=From Iron Curtain to Green Belt |newspaper=Guardian |date=2009-07-04 |access-date=2010-05-07 |location=London}}</ref><ref>{{cite web |url=http://europeangreenbelt.org/001.route_ce.html |title=European Green Belt |publisher=European Green Belt |access-date=2010-05-07 |archive-url=https://web.archive.org/web/20100129132357/http://europeangreenbelt.org/001.route_ce.html |archive-date=2010-01-29 }}</ref>

[[File:Oriskany July 2008 -57.jpg|thumb|Sea life on the wreck of the sunken [[USS Oriskany (CV-34)|USS ''Oriskany'']]]]
The sinking of ships in shallow waters during wartime has created many [[artificial reef|artificial coral reefs]], which can be scientifically valuable and have become an attraction for recreational divers. This led to the [[deliberate sinking]] of retired ships for the purpose of replacing coral reefs lost to [[global warming]] and other factors.<ref>{{cite web |url=http://www.dnr.maryland.gov/dnrnews/pressrelease2008/020708a.html |title=Maryland Artificial Reef Initiative Celebrates 1 Year Anniversary |publisher=Dnr.maryland.gov |date=2008-02-07 |access-date=2010-05-07}}</ref><ref>{{cite web |url=https://www.nbcnews.com/id/wbna18853363 |title=Sinking ships will boost tourism, group says&nbsp;– News&nbsp;– NBC News |work=NBC News |date=2007-05-25 |access-date=2010-05-07}}</ref><ref>{{cite web |url=http://www.thenational.ae/apps/pbcs.dll/article?AID=/20090921/NATIONAL/709209873/1042/FOREIGN |archive-url=https://web.archive.org/web/20150509132717/http://www.thenational.ae/apps/pbcs.dll/article?AID=%2F20090921%2FNATIONAL%2F709209873%2F1042%2FFOREIGN |archive-date=2015-05-09 |title=Life after death on the ocean floor&nbsp;– The National Newspaper |publisher=Thenational.ae |date=2009-09-21 |access-date=2010-05-07 }}</ref><ref>{{cite web |url=http://cbs4.com/local/vandenberg.fish.key.2.1250653.html |title=Sea Life Flourishing On Vandenberg Wreck Off Keys |publisher=cbs4.com |date=2009-10-15 |access-date=2010-05-07 |archive-url=https://web.archive.org/web/20091227174325/http://cbs4.com/local/vandenberg.fish.key.2.1250653.html |archive-date=2009-12-27 }}</ref><ref>{{cite web |url=http://www.cdnn.info/news/industry/i061227.html |title=CDNN: Diver Wants to Sink Old Navy Ships off California Coast |publisher=Cdnn.info |date=2006-12-27 |access-date=2010-05-07}}</ref>

In [[medicine]], most [[Medication|drugs]] have unintended consequences ('[[side effect]]s') associated with their use. However, some are beneficial. For instance, [[aspirin]], a [[pain reliever]], is also an [[anticoagulant]] that can help prevent [[myocardial infarction|heart attacks]] and reduce the severity and damage from [[thrombotic stroke]]s.<ref name=BBC15Feb2001>{{cite news |url=http://news.bbc.co.uk/1/hi/health/1168850.stm |title=BBC 15 February 2001, ''Aspirin heart warning'' |work=BBC News |date=2001-02-15 |access-date=2010-05-07}}</ref> Beneficial side effects have also lead to [[off-label use]] {{Ndash}}prescription or use of a drug for an unlicensed purpose. Famously, the drug [[Viagra]] was developed to lower blood pressure, with its use for treating [[erectile dysfunction]] being discovered as a side effect in clinical trials.

In [[Papal conclave|papal conclave]] journalism, Cardinal [[Fridolin Ambongo Besungu]] of [[Kinshasa]] in the [[Democratic Republic of Congo]], the elected leader of all the bishops of Africa (including Madagascar), by early 2024 had come to be regarded as [[papabile]] for his adroit handling of the issue of blessing [[same sex unions]], to which he is staunchly opposed. <ref>{{Cite web|url=https://cruxnow.com/news-analysis/2024/01/on-the-cobra-effect-and-congos-ambongo-as-an-emerging-papal-candidate|title=On the 'Cobra Effect' and Congo's Ambongo as an emerging papal candidate|date=January 31, 2024|website=Crux}}</ref>

===Unexpected drawbacks===
The implementation of a profanity filter by [[AOL]] in 1996 had the unintended consequence of blocking residents of [[Scunthorpe]], [[North Lincolnshire]], England, from creating accounts because of a [[false positive]].<ref name="risks digest">{{cite journal |url=http://catless.ncl.ac.uk/Risks/18.07.html#subj3 |title=AOL censors British town's name! |journal=The Risks Digest |publisher=ACM Committee on Computers and Public Policy |date=25 April 1996 |author=Clive Feather |volume=18 |issue=7 |editor=Peter G. Neumann}}</ref> The accidental [[censorship]] of innocent language, known as the [[Scunthorpe problem]], has been repeated and widely documented.<ref>{{cite web |url=http://blog.siliconglen.com/2010/03/bbc-fail-my-correct-name-is-not.html |title=BBC fail – my correct name is not permitted |first1=Craig |last1=Cockburn |publisher=blog.siliconglen.com |date=9 March 2010 |access-date=24 February 2011}}</ref><ref name="butt">{{cite news |url=https://www.telegraph.co.uk/news/newstopics/howaboutthat/2667634/The-Clbuttic-Mistake-When-obscenity-filters-go-wrong.html |archive-url=https://ghostarchive.org/archive/20220112/https://www.telegraph.co.uk/news/newstopics/howaboutthat/2667634/The-Clbuttic-Mistake-When-obscenity-filters-go-wrong.html |archive-date=2022-01-12 |url-access=subscription |url-status=live |title=The Clbuttic Mistake: When obscenity filters go wrong |last=Moore |first=Matthew |date=2 September 2008 |work=The Daily Telegraph |access-date=4 April 2010 |location=London}}{{cbignore}}</ref><ref>{{cite news |url=http://www.switched.com/2008/08/01/town-censors-its-name/ |title=F-Word Town's Name Gets Censored By Internet Filter |access-date=27 July 2011}}</ref>

In 1990, the Australian state of [[Victoria (Australia)|Victoria]] made [[bicycle helmet|safety helmets]] mandatory for all bicycle riders. While there was a reduction in the number of head injuries, there was also an unintended reduction in the number of juvenile cyclists—fewer cyclists obviously leads to fewer injuries, [[Ceteris paribus|all else being equal]]. The risk of death and serious injury per cyclist seems to have increased, possibly because of [[risk compensation]],<ref>{{Cite web|url=https://www.cyclehelmets.org/1241.html|title=Head Injuries and Helmet Laws in Australia and New Zealand|website=www.cyclehelmets.org}}</ref>

Research by Vulcan, ''et al.'' found that the reduction in juvenile cyclists was because the youths considered wearing a bicycle helmet unfashionable.<ref>{{cite journal |last1=Cameron |first1=Maxwell H. |last2=Vulcan |first2=A. Peter |last3=Finch |first3=Caroline F. |last4=Newstead |first4=Stuart V. |date=June 1994 |title=Mandatory bicycle helmet use following a decade of helmet promotion in Victoria, Australia—an evaluation |journal=Accident Analysis and Prevention |volume=26 |issue=3 |pages=325–37 |doi=10.1016/0001-4575(94)90006-X |pmid=8011045}}</ref> A health-benefit model developed at [[Macquarie University]] in Sydney suggests that, while helmet use reduces "the risk of head or brain injury by approximately two-thirds or more", the decrease in exercise caused by reduced cycling as a result of helmet laws is counterproductive in terms of net health.<ref>
[http://docplayer.net/storage/64/52001739/1538888219/17X_qhDVpvxBJrWz1V_yZA/52001739.pdf de Jong. Piet (2012), "Evaluating the Health Benefit of Mandatory Bicycle Helmet Laws", ''Risk Analysis'', Vol.32, No.5, p.782-790.]</ref>

[[Prohibition in the United States|Prohibition in the 1920s United States]], originally enacted to suppress the alcohol trade, drove many small-time alcohol suppliers out of business and consolidated the hold of large-scale [[organized crime]] over the illegal alcohol industry. Since alcohol was still popular, criminal organisations producing alcohol were well-funded and hence also increased their other activities. Similarly, the [[War on Drugs]], intended to suppress the [[illegal drug trade]], instead increased the power and profitability of drug cartels who became the primary source of the products.<ref>Juan Forero, "Colombia's Coca Survives U.S. plan to uproot it", The New York Times, August 19, 2006</ref><ref>Don Podesta and Douglas Farah, "Drug Policy in Andes Called Failure," ''[[Washington Post]]'', March 27, 1993</ref><ref name="streatfeild">{{cite web |author=Dominic Streatfeild |title=Source Material for ''Cocaine: An Unauthorized Biography'': Interview between Milton Friedman and Dominic Streatfeild |date=June 2000 |url=http://www.dominicstreatfeild.com/2010/11/08/interview-with-milton-friedman/ |publisher=Dominicstratfeild |access-date=2012-11-21 |archive-url=https://web.archive.org/web/20121113201345/http://www.dominicstreatfeild.com/2010/11/08/interview-with-milton-friedman/ |archive-date=2012-11-13 }}</ref><ref>{{cite web |title=An open letter |url=http://www.prohibitioncosts.org/endorsers.html |publisher=Prohibition Costs |access-date=2008-02-20 |archive-url=https://web.archive.org/web/20060110171453/http://www.prohibitioncosts.org/endorsers.html |archive-date=2006-01-10 }}</ref>

In [[CIA]] [[jargon]], "[[Blowback (intelligence)|blowback]]" describes the unintended, undesirable consequences of covert operations, such as the funding of the [[Afghan Mujahideen]] and the destabilization of Afghanistan contributing to the rise of the [[Taliban]] and [[Al-Qaeda]].<ref name=BinLiner>{{cite web |url=http://www.msnbc.com/news/190144.asp |title=Bin Laden comes home to roost |website=[[MSNBC]] |access-date=2009-12-30 |archive-url=https://web.archive.org/web/19981202035147/http://www.msnbc.com/news/190144.asp |archive-date=December 2, 1998 }}</ref><ref>{{cite web |url=https://www.theatlantic.com/issues/96may/blowback.htm |title=Blowback – 96.05 |publisher=Theatlantic.com |access-date=2012-11-21|date=May 1996 }}</ref><ref>{{cite news |author=Peter Beaumont |url=http://www.observer.co.uk/international/story/0,6903,787999,00.html |title=Why 'blowback' is the hidden danger of war &#124; World news |publisher=The Observer |access-date=2012-11-21|newspaper=The Guardian |date=2002-09-08 }}</ref>

The introduction of [[Introduced species|exotic]] animals and plants for food, for decorative purposes, or to control unwanted species often leads to more harm than good done by the introduced species.
* The introduction of [[rabbits in Australia]] and [[New Zealand]] for food was followed by an explosive growth in the rabbit population; rabbits have become a major [[feral]] [[Pest (animal)|pest]] in these countries.<ref>{{cite web |url=http://agspsrv34.agric.wa.gov.au/programs/app/barrier/history.htm |archive-url=https://web.archive.org/web/20050722133944/http://agspsrv34.agric.wa.gov.au/programs/app/barrier/history.htm |archive-date=2005-07-22 |title=The State Barrier Fence of Western Australia |publisher=The State Barrier Fence Project |access-date=2009-10-09 }}</ref><ref>{{cite web |url=http://christchurchcitylibraries.com/Kids/NZBirdsAnimals/Rabbits/ |title=Rabbits: Introduction into New Zealand |publisher=Christchurch City Libraries |access-date=2009-10-09}}</ref>
* [[Cane toad]]s, introduced into Australia to control canefield pests, were unsuccessful and have become a major pest in their own right.
* [[Kudzu]], introduced to the US as an ornamental plant in 1876<ref name="Kudzu: Love It or Run">[[Smithsonian Magazine]] [https://archive.today/20130202145614/http://www.smithsonianmag.com/science-nature/kudzu-abstract.html Kudzu: Love It or Run]</ref> and later used to prevent erosion in earthworks, has become a major problem in the Southeastern United States. Kudzu has displaced native plants and has effectively taken over significant portions of land.<ref name="Illinois">{{cite web |url=http://www.news.uiuc.edu/NEWS/05/1020kudzu.html |title=Fast-growing kudzu making inroads in Illinois, authorities warn |access-date=April 28, 2008 |publisher=News Bureau, University of Illinois at Urbana-Champaign |year=2005 |author=Molly McElroy |archive-url=https://web.archive.org/web/20080706015032/http://www.news.uiuc.edu/news/05/1020kudzu.html |archive-date=July 6, 2008 |df=mdy-all }}</ref><ref name="blaustein">{{cite web |url=http://www.srs.fs.usda.gov/pubs/ja/ja_blaustein001.pdf |archive-url=https://web.archive.org/web/20061006031255/http://www.srs.fs.usda.gov/pubs/ja/ja_blaustein001.pdf |archive-date=2006-10-06 |url-status=live |title=Kudzu's invasion into Southern United States life and culture |access-date=August 20, 2007 |publisher=United States Department of Agriculture |year=2001 |author=Richard J. Blaustein }}</ref>

The protection of the steel industry in the United States reduced production of steel in the United States, increased costs to users, and increased unemployment in associated industries.<ref>{{cite journal |url=http://www.gpo.gov/fdsys/pkg/CHRG-107hhrg81372/html/CHRG-107hhrg81372.htm |title=The Unintended Consequences of Increased Steel Tariffs on American Manufacturers |journal=Committee on Small Business, House of Representatives, 107th United States Congress |location=Washington, DC |date=July 23, 2002 |number=Serial No. 107–66 |publisher=[[U.S. Government Printing Office]] |access-date=October 26, 2014}}</ref><ref>{{cite web |url=http://citac.info/study/citac_2002jobstudy_020703.pdf |archive-url=https://web.archive.org/web/20030403044706/http://www.citac.info/study/citac_2002jobstudy_020703.pdf |archive-date=2003-04-03 |url-status=live |publisher=CITAC Foundation/Trade Partnership Worldwide, LLC |title=The Unintended Consequences of U.S. Steel Import Tariffs: A Quantification of the Impact During 2002 |first1=Dr. Joseph |last1=Francois |first2=Laura M. |last2=Baughman |date=February 4, 2003 |location=Washington DC |access-date=October 26, 2014}}</ref>

===Perverse results===
{{See also|Perverse incentive|Perverse subsidies}}
<!--Do NOT add examples, see talk! There are already too many examples. Discuss in talk first before adding an example. Otherwise it will be removed. -->
In 2003, [[Barbra Streisand]] unsuccessfully sued Kenneth Adelman and Pictopia.com for posting a photograph of her home online.<ref>{{cite news |url=https://www.bbc.co.uk/news/magazine-28562156 |title=The perils of the Streisand effect |newspaper=BBC News |access-date=9 September 2015|date=2014-07-31 |last1=Parkinson |first1=Justin }}</ref> Before the lawsuit had been filed, only 6 people had downloaded the file, two of them Streisand's attorneys.<ref>Tentative ruling, page 6, stating, "Image 3850 was download six times, twice to the Internet address of counsel for plaintiff". In addition, two prints of the picture were ordered — one by Streisand's counsel and one by Streisand's neighbor. http://www.californiacoastline.org/streisand/slapp-ruling-tentative.pdf</ref> The lawsuit drew attention to the image, resulting in 420,000 people visiting the site.<ref name=rogers>{{cite web |url=http://www.californiacoastline.org/news/sjmerc5.html |title=Photo of Streisand home becomes an Internet hit |access-date=2007-06-15 |last=Rogers |first=Paul |date=2003-06-24 |work=[[San Jose Mercury News]]|via= californiacoastline.org}}</ref> The [[Streisand Effect]] was named after this incident, describing when an attempt to censor or remove a certain piece of information instead draws attention to the material being suppressed, resulting in the material instead becoming widely known, reported on, and distributed.<ref name=London>{{cite web |last=Canton |first=David |url=http://www.lfpress.ca/cgi-bin/publish.cgi?p=111404&x=articles&s=shopping |title=Today's Business Law: Attempt to suppress can backfire |archive-url=https://archive.today/20070927014240/http://www.lfpress.ca/cgi-bin/publish.cgi?p=111404&x=articles&s=shopping |archive-date=2007-09-27 |work=[[London Free Press]] |date=November 5, 2005 |access-date=July 21, 2007 |quote=The "Streisand effect" is what happens when someone tries to suppress something and the opposite occurs. The act of suppressing it raises the profile, making it much more well known than it ever would have been}}</ref>

Passenger-side [[airbag]]s in motorcars were intended as a safety feature, but led to an increase in child fatalities in the mid-1990s because small children were being hit by airbags that deployed automatically during collisions. The supposed solution to this problem, moving the child seat to the back of the vehicle, led to an increase in the number of children forgotten in unattended vehicles, some of whom died under extreme temperature conditions.<ref>{{cite magazine |url=https://time.com/hot-car-death/ |magazine=Time |first1=Justin |last1=Worland/Ridgefield |title=Who's To Blame For Hot Car Deaths? |date=2014-09-02}}</ref>

Risk compensation, or the [[Risk compensation|Peltzman effect]], occurs after implementation of safety measures intended to reduce injury or death (e.g. bike helmets, seatbelts, etc.). People may feel safer than they really are and take additional risks which they would not have taken without the safety measures in place. This may result in no change, or even an increase, in morbidity or mortality, rather than a decrease as intended.

According to an [[anecdote]], the British government, concerned about the number of venomous cobra snakes in [[Delhi]], offered a bounty for every dead cobra. This was a successful strategy as large numbers of snakes were killed for the reward. Eventually, enterprising people began breeding cobras for the income. When the government became aware of this, they scrapped the reward program, causing the cobra breeders to set the now-worthless snakes free. As a result, the wild cobra population further increased. The apparent solution for the problem made the situation even worse, becoming known as the [[Cobra effect]].

[[Theobald Mathew (temperance reformer)|Theobald Mathew]]'s temperance campaign in 19th-century [[Ireland]] resulted in thousands of people vowing never to drink [[Alcoholic drink|alcohol]] again. This led to the consumption of [[diethyl ether]], a much more dangerous intoxicant—owing to its high flammability—by those seeking to become intoxicated without breaking the letter of their pledge.{{Dubious|date=June 2023}}<ref>{{cite web |url=http://www.worldwidewords.org/weirdwords/ww-eth1.htm |title=Etheromaniac |publisher=World Wide Words |date=2006-09-09 |access-date=2012-11-21}}</ref><ref>{{Cite news|url=https://unintendedconsequenc.es/substitutions-temperance-movement-ether/|title=Substitutions - The Temperance Movement and Ether - Unintended Consequences|date=2018-09-16|work=Unintended Consequences|access-date=2018-09-16|language=en-US}}</ref>

It was thought that adding south-facing [[Conservatory (greenhouse)|conservatories]] to British houses would reduce energy consumption by providing extra insulation and warmth from the sun. However, people tended to use the conservatories as living areas, installing heating and ultimately increasing overall energy consumption.<ref>"Our innate ability to think of new ways to use energy" Professor [[Tadj Oreszczyn]]. Summer 2009 edition of 'palette', UCL's journal of sustainable cities.</ref>

A reward for [[ghost net|lost nets]] found along the Normandy coast was offered by the French government between 1980 and 1981. This resulted in people vandalizing nets to collect the reward.<ref>Andres, Von Brandt (1984) ''Fish catching methods of the world'' {{ISBN|978-0-685-63409-7}}.</ref>

Beginning in the 1940s and continuing into the 1960s, the Canadian federal government gave Quebec $2.75 per day per psychiatric patient for their cost of care, but only $1.25 a day per orphan. The perverse result is that the orphan children were diagnosed as mentally ill so Quebec could receive the larger amount of money. This psychiatric misdiagnosis affected up to 20,000 people, and the children are known as the [[Duplessis Orphans]] in reference to the Premier of Quebec who oversaw the scheme, [[Maurice Duplessis]].<ref>{{cite web |url=https://www.cbc.ca/news/canada/quebec-ombudsman-says-duplessis-orphans-right-1.173120 |title=CBC |work=google.com |access-date=2 November 2023}}</ref><ref>{{cite web |url=https://news.google.com/newspapers?id=1WNWAAAAIBAJ&pg=6929%2C5814760 |title=The Spokesman-Review |work=google.com |access-date=9 September 2015}}</ref><ref>{{cite web |url=https://news.google.com/newspapers?id=DeceAAAAIBAJ&pg=6753%2C1774080 |title=Sarasota Herald-Tribune |work=google.com |access-date=9 September 2015}}</ref><ref>{{cite web |url=https://news.google.com/newspapers?id=lT9TAAAAIBAJ&pg=6732%2C2759782 |title=The Prescott Courier |work=google.com |access-date=9 September 2015}}</ref>

There have been attempts to curb the consumption of sugary beverages by imposing a tax on them. However, a study found that the reduced consumption was only temporary.<!-- Then how long?  --> Also, there was an increase in the consumption of beer among households.<ref name="Wansink">{{Cite SSRN |last1=Wansink|first1=Brian|last2=Hanks|first2=Andrew S.|last3=Just|first3=David R.|date=2012-05-26|title=From Coke to Coors: A Field Study of a Fat Tax and Its Unintended Consequences|ssrn=2079840}}</ref>

The [[New Jersey Childproof Handgun Law]], which was intended to protect children from accidental discharge of firearms by forcing all future firearms sold in [[New Jersey]] to contain [[smart gun|"smart" safety features]], has delayed, if not stopped entirely, the introduction of such firearms to New Jersey markets. The wording of the law caused significant public backlash,<ref>{{cite news| url=http://www.inc.com/joseph-steinberg/smartguns-what-you-need-to-know.html |work=Inc. | title=Smartguns: What You Need to Know | date=January 11, 2016 | access-date=January 11, 2016 |author=Joseph Steinberg }}</ref> fuelled by [[National Rifle Association|gun rights lobbyists]],<ref>{{cite web | url=http://www.highbrowmagazine.com/4363-why-nra-opposes-smart-guns | title=Why the NRA Opposes Smart Guns | date=15 October 2014 | access-date=26 December 2015 | author=Trumbly, Katie}}</ref><ref>{{cite web | url=https://www.theverge.com/2014/5/5/5683504/gun-control-the-nra-wants-to-take-smart-guns-away | title=Gun control: the NRA wants to take America's smart guns away | website=[[The Verge]] | date=5 May 2014 | access-date=26 December 2015 | author=Jeffries, Adrianne}}</ref> and several shop owners offering such guns received death threats and stopped stocking them.<ref>{{cite news|url=https://www.washingtonpost.com/local/california-smart-gun-store-prompts-furious-backlash/2014/03/06/43432058-a544-11e3-a5fa-55f0c77bf39c_story.html|title=Calif. store backs away from smart guns after outcry from 2nd Amendment activists|first=Michael S.|last=Rosenwald| date =6 March 2014 |newspaper=The Washington Post}}</ref><ref name=wp-marylandsmart>{{cite news |first=Michael S. |last=Rosenwald |title=Maryland dealer, under pressure from gun-rights activists, drops plan to sell smart gun |url=https://www.washingtonpost.com/local/maryland-dealer-will-defy-gun-rights-advocates-by-selling-nations-first-smart-gun/2014/05/01/564efa48-d14d-11e3-937f-d3026234b51c_story.html |newspaper=The Washington Post |date=1 May 2014 |access-date=8 May 2014}}</ref> In 2014, 12 years after the law was passed, it was suggested the law be repealed if gun rights lobbyists agree not to resist the introduction of "smart" firearms.<ref>{{Cite web| last = Montopoli| first = Brian| title = N.J. Democrat: We will reverse smart gun law if NRA plays ball| work = MSNBC| access-date = 2014-05-22| date = 2014-05-02| url = http://www.msnbc.com/all/democrat-we-will-reverse-smart-gun-law}}</ref>

[[Prohibition of drugs|Drug prohibition]] can lead [[Illegal drug trade|drug traffickers]] to [[Preference (economics)|prefer]] stronger, more dangerous substances, that can be more easily smuggled and distributed than other, less concentrated substances.<ref>{{Cite news| issn = 0261-3077| last = Kassam| first = Ashifa| title = 'Dose as small as a grain of sand can kill you': alarm after Canada carfentanil bust| work = The Guardian| access-date = 2017-11-12| date = 2017-11-12| url = https://www.theguardian.com/world/2017/nov/12/carfentanil-bust-canada-fentanyl-opioid-crisis-dangers}}</ref>

Televised drug prevention advertisements may lead to increased drug use.<ref>{{Cite journal |last1=Hornik |first1=Robert |last2=Jacobsohn |first2=Lela |last3=Orwin |first3=Robert |last4=Piesse |first4=Andrea |last5=Kalton |first5=Graham |date=December 2008 |title=Effects of the National Youth Anti-Drug Media Campaign on Youths |journal=American Journal of Public Health |volume=98 |issue=12 |pages=2229–2236 |doi=10.2105/AJPH.2007.125849 |issn=0090-0036 |pmc=2636541 |pmid=18923126}}</ref>

Increasing usage of [[search engine]]s, also including recent [[Image retrieval|image search]] features, has contributed in the ease of which media is consumed. Some [[Abnormal psychology|abnormalities]] in usage may have shifted preferences for pornographic film actors, as the producers began using [[search engine optimization|common search queries or tags]] to label the actors in new roles.<ref>{{Cite web| last = Kline| first = Matthew| title = How SEO has changed the porn industry| work = Mashable| date = 11 August 2017| access-date = 2017-08-12| url = http://mashable.com/2017/08/11/seo-of-porn/}}</ref>

The passage of the [[Stop Enabling Sex Traffickers Act]] has led to a reported increase in risky behaviors by sex workers as a result of quashing their ability to seek and screen clients online, forcing them back onto the streets or into the [[dark web]]. The ads posted were previously an avenue for advocates to reach out to those wanting to escape the trade.<ref>{{Cite magazine | url=https://www.rollingstone.com/culture/features/sesta-fosta-forces-sex-trafficking-victims-streets-dark-web-w520720 |title = New Law Forces Sex-Trafficking Victims to Streets, Dark Web|magazine = [[Rolling Stone]]|date = 2018-05-25}}</ref>

The use of [[precision guided munition]]s meant to reduce the rate of [[collateral damage|civilian casualties]] encouraged armies to narrow their safety margins, and increase the use of deadly force in densely populated areas. This in turn increased the danger to uninvolved civilians, who in the past would have been out of the line of fire because of armies' aversion of using higher-risk weaponry in densely populated areas.<ref name="Levi 2019">{{Cite news |last=לוי |first=יגיל |date=2019-12-25 |script-title=he:במערב חשבו שחימוש מדויק יצמצם פגיעה באזרחים. זה לא קרה |language=he |newspaper=Haaretz |url=https://www.haaretz.co.il/magazine/the-edge/.premium-MAGAZINE-1.8316333 |access-date=2021-05-25}}</ref> The perceived ability to operate precision weaponry from afar (where in the past heavy munitions or troop deployment would have been needed) also led to the expansion of the list of potential targets.<ref name="Levi 2019" /> As put by [[Michael Walzer]]: "Drones not only make it possible for us to get at our enemies, they may also lead us to broaden the list of enemies, to include presumptively hostile individuals and militant organizations simply because we can get at them–even if they aren't actually involved in attacks against us."<ref>{{Cite journal |last=Walzer |first=Michael |date=2016-09-01 |title=Just & Unjust Targeted Killing & Drone Warfare |journal=Daedalus |volume=145 |issue=4 |pages=12–24 |doi=10.1162/DAED_a_00408 |s2cid=57563272 |issn=0011-5266}}</ref> This idea is also echoed by [[Grégoire Chamayou]]: "In a situation of moral hazard, military action is very likely to be deemed 'necessary' simply because it is possible, and possible at a lower cost."<ref>{{Cite book |last=Chamayou |first=Grégoire |title=Drone theory |publisher=Penguin |year=2015 |isbn=978-0-241-97034-8 |location=London |oclc=903527249}}</ref>{{page needed|date=November 2023}}

After ''[[Dobbs v. Jackson Women's Health Organization]]'' (2022) overturned ''[[Roe v. Wade]]'' (1973), the number of abortions in the United States increased and the number of births fell, due to the [[Freedom of movement under United States law|right to travel]] between states.<ref>{{Cite web|url=https://www.nytimes.com/2024/10/22/upshot/abortions-rising-state-bans.html|title=Abortions Have Increased, Even for Women in States With Rigid Bans, Study Says|date=October 22, 2024|website=The New York Times|first1=Claire Cain|last1=Miller|first2=Margot|last2=Sanger-Katz|first3=Josh|last3=Katz|access-date=December 2, 2024}}</ref><ref>{{Cite book|title=After Dobbs: How the Supreme Court Ended Roe but Not Abortion|date=2025|first1=David S.|last1=Cohen|first2=Carole|last2=Joffe|publisher=Beacon Press |isbn=978-0807017661 |quote=When the Supreme Court overturned ''Roe v. Wade'' in June 2022, many feared it meant the end of abortion access in the United States. Yet the courageous work of people on the ground has allowed abortion to survive post-Dobbs in ways that no one predicted. ... Taking place across three intervals throughout 2022—pre-Dobbs in early 2022, right after Dobbs, and then six months later—these interviews showcase how nimble thinking on the part of providers, growth and new delivery models of abortion pills, and the never-ending work of those who help with abortion travel and funding have ensured most people who want them are still getting abortions, even without Roe.}}</ref><ref>{{Cite web|url=https://www.cdc.gov/nchs/products/databriefs/db507.htm|title=Births in the United States, 2023|date=August 2024|access-date=March 14, 2025|website=Centers for Disease Control}}</ref>

===Other===
According to [[Lynn Townsend White|Lynn White]], the invention of the horse [[stirrup]] enabled new patterns of warfare that eventually led to the development of [[feudalism]] (see [[Stirrup Thesis]]).<ref>{{Cite book |title=Medieval technology and social change |author=Lynn White Jr. |date=1962 |publisher=Clarendon Press |isbn=978-0-19-500266-9 |location=Oxford |oclc=390344 |url-access=registration |url=https://archive.org/details/medievaltechnolo00whit }}</ref>