Editing Ringworld (section)

==Errors==
[[File:Ringworld render.png|thumb|right|Artist's rendition]]
The opening chapter of the original paperback edition of ''Ringworld'' featured Louis Wu teleporting eastward around the Earth in order to extend his birthday. Moving in this direction would, in fact, make local time later rather than earlier, so that Wu would soon arrive in the early morning of the next calendar day. Niven was "endlessly teased" about this error, which he corrected in subsequent printings to show Wu teleporting westward.<ref>{{cite web|title=Fantastic Reviews: Larry Niven Interview|url= http://www.geocities.com/fantasticreviews/niven_interview.htm|date=August 2004|access-date=2009-05-10|archive-url=https://web.archive.org/web/20091026143700/http://geocities.com/fantasticreviews/niven_interview.htm|url-status=dead|archive-date=2009-10-26}}</ref> In his dedication to ''The Ringworld Engineers'', Niven wrote, "If you own a first paperback edition of ''Ringworld'', it's the one with the mistakes in it. It's worth money."<ref>{{cite book|title=The Ringworld Engineers|last=Niven|first=Larry|year=1980|publisher=Ballantine Books (Del Rey)|location=New York|isbn=0-345-33430-2|page=vii }}</ref>

After the publication of ''Ringworld'', many fans identified numerous engineering problems in the Ringworld as described in the novel. One major one was that the Ringworld, being a rigid structure, was not actually in orbit around the star it encircled and would eventually drift, ultimately colliding with its sun and disintegrating. This led [[Massachusetts Institute of Technology|MIT]] students attending the 1971 [[World Science Fiction Convention|Worldcon]] to chant, "The Ringworld is unstable!" Niven wrote the 1980 sequel ''[[The Ringworld Engineers]]'' in part to address these engineering issues.

The second chapter refers to standard Earth gravity as {{val|9.98|u=m/s2}} (or even gives the unit as m/s [''sic'']), while [[Standard gravity|standard Earth gravity]] is {{val|9.81|u=m/s2}}. 
The fifth chapter refers to Nereid as Neptune's largest moon; the planet's largest moon is Triton.

[[File:Ringworld .jpg|thumb|right|Ringworld]]