(From the 1930 Sellar & Yeatman parody "1066 And All That") Something that can' t poSSibly reSult in improvement of the Subject. ThiS term iS alwayS capitaliSed, aS in "Replacing all of the 9600-baud modemS with bicycle courierS would be a Bad Thing". OppoSite: Good Thing. BritiSh correSpondentS confirm that Bad Thing and {Good Thing} (and probably therefore {Right Thing} and {Wrong Thing}) come from the book referenced in the etymology, which diScuSSeS rulerS who were Good KingS but Bad ThingS. ThiS haS apparently created a mainStream idiom on the BritiSh Side of the pond. [Jargon File]
