Editing Wilfred Bion (section)

===Reversible perspective and −K===
"Reversible Perspective" was a term coined by Bion to illuminate "a peculiar and deadly form of analytic ''impasse'' which defends against psychic pain".<ref>Mary Jacobus, ''The Poetics of Psychoanalysis'' (London 2005) p. 43</ref> It represents the clash of "two independently experienced views or phenomena whose meanings are incompatible".<ref>Jacobus, p. 261</ref> In Bion's own words, "Reversible perspective is evidence of pain; the patient reverses perspective so as to make a dynamic situation static."<ref name="Jacobus, p. 243">Jacobus, p. 243</ref>

As summarised by [[Horacio Etchegoyen|Etchegoyen]], "Reversible perspective is an extreme case of rigidity of thought. ... As Bion says, what is most characteristic in such cases is the manifest accord and the latent discord."<ref>F. Horacio Etchegoyen, ''The Fundamentals of Psychoanalytic Technique'' (London 2005) pp. 770–2</ref> In clinical contexts, what may happen is that the analyst's "interpretation is accepted, but the ''premises have been rejected'' ... the actual specificity, the substance of the interpretation".<ref>Ruth R. Malcolm, "As if", in Robin Anderson ed., ''Clinical Lectures on Klein and Bion'' (London 1982) p. 116 and p. 118</ref> Reversible perspective is an aspect of "the potential destruction and deformation of knowledge"<ref name="Jacobus, p. 243"/> – one of the attacks on linking of −K.