I would lean towards 10 years but only because leaning towards an extreme number would probably result in a reasonable number like 20/30/40 anyway. The only par

I would lean towards 10 years but only because leaning towards an extreme number would probably result in a reasonable number like 20/30/40 anyway. The only part of copyright that I haven't convinced myself of is whether being able to pass "ownership" of ideas down to your children is something that should be important or not.