That's a rather controversial statement these days... ("Worse is better", etc.)

Personally, I agree with you in theory. However, in practice, a shoddy but shipping product today is better than a perfectly-designed and implemented product that is only half done when your funding runs dry.

(Rereading your wording, I suspect that you may mean "answer" as in "the output of a program", rather than the program itself, but even then a 90% solution may be adequate, provided that it's smart enough to tell you when it can't work out the correct result.)