R. Austin Freeman, The Red Thumb Mark — Chapter X (1924)
“ His manner was wholly facetious, but I professed to take his question seriously, and replied—"By a guess, I mean a conclusion arrived at without data.""Impossible!" he exclaimed, with mock sternness. "Nobody but an utter fool arrives at a conclusion without data.""Then I must revise my definition instantly," I rejoined. "Let us say that a guess is a conclusion drawn from insufficient facts.""That is better," said he; "but perhaps it would be better still to say that a guess is a particular and definite conclusion deduced from facts which properly yield only a general and indefinite one. ”
