Historical clue formulations

• Nitpickers — 2021-11-11
• Good fact-checking types — 2016-08-21
• Nitpicking types — 2010-11-24
• Sticklers — 2005-08-13
• Know-it-alls — 2001-03-10
• They split hairs — 1998-04-04
• Hairsplitters — 1997-07-20