Artificial intelligent assistant

non est factum

non est factum Law.
  (nɒn ɛst ˈfæktəm)
  [L. = ‘it was not done’.]
  (See quot. 1607.)

1607 Cowell Interpr., Non est factum is an aunswer to a declaration, whereby a man denyeth that to be his deed, whereupon he is impleaded. 1712 Arbuthnot John Bull ii. xvi, Expences of the Suits,..To Esquire South's Accompt for post Terminums; To ditto for Non est Factums.

Oxford English Dictionary

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