Always multiply your time estimate by Pi (an Irrational number). That way you're guaranteed your estimate will be irrational! (Just like the clients expection :P)

@masterdoctor beat me to it

@masterdoctor or N/Pi N = any rational. that way it fits all cases (;

@masterdoctor @dalastTomCruise I guess the invariant is, that developers are rational and therefore make rational estimates. However if you would have an irrational estimate I guess you could runn it in a loop... `while (not_rational(estimate)) { estimate *= π; }`