Maybe software patents should only be good for a few years? I think that a current patent is good for twenty, but maybe it's only fair if a patent can last for five years? That might really encourage innovation...
Yes, none years sounds good. Shall we go with that? ;)
Copyright is a generally good force; its current lifespan is too long, but it has demonstrable value, even in software.
Patents have demonstrated no such value.
Thanks for playing, though!