Jonathan David Page talks about whatever he happens to be thinking about. Sometimes other people join in.
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While working through the thesaurus for a project, I came across an entry under "falseness" which I did not expect: ambidexterity
A quick trip to the dictionary confirms. Ambidexterity does indeed have "duplicity" as a meaning, along with "ability to use both hands equally well".
All I can say is that anyone who has seen The Princess Bride should have a pretty good idea of why this is the case.