We see, then, that some systems can be unreasonably finickity about the use one may make of assumptions for the sake of argument, especially with a rule like the rule of conditional proof.
2005, House of Commons International Development Committee, Parliament of Great Britain, Development assistance in Iraq: Interim Report : Seventh Report of Session 2004-05, ISBN0215024230, page 9:
Q62 Mr Bercow: But £86 million is very precise. It is not £85 million, it is not £90 milllion; it is £86 million. […] I am sorry if you think I am being finickity; I am being very finickity about it but I believe rightly.
I got most of the money to pay for all this by stealing. It was very wrong. Today I'm so finickity that I fired one of my staff for nicking twenty-pence worth of curtain hangers from Barkers because he couldn't be bothered to wait at the till queue.