But financiers who second-guess management about the details of company operations may be over-reaching.
Eisenhower, of course, was rather difficult to second-guess on such matters.
And even EMS dispatch vets, generally reluctant to second-guess the work of one of their own, have piled on.
1941, back-formation from second-guesser (1937), American English, originally baseball slang for a fan who loudly questions decisions by players, managers, etc.; perhaps from guesser in the baseball slang sense of "umpire."