No Victor, you got it backwards, you should evaluate these integrals non-rigorously if you can, and rigorously if you must.
Doron ZeilbergerLet me also remind you that zero, like all of mathematics, is fictional and an idealization. It is impossible to reach absolute zero temperature or to get perfect vacuum. Luckily, mathematics is a fairyland where ideal and fictional objects are possible.
Doron ZeilbergerMathematics my foot! Algorithms are mathematics too, and often more interesting and definitely more useful.
Doron ZeilbergerRegardless of whether or not God exists, God has no place in mathematics, at least in my book.
Doron Zeilberger