Interestingly, two of the three private copyright acts in America prior to the Copyright Act of 1790 I was referring to were for 7 years. I'm sure if you try,

Interestingly, two of the three private copyright acts in America prior to the Copyright Act of 1790 I was referring to were for 7 years. I'm sure if you try, you can find a more recent book. This is just some more food for thought. What length of time do you believe strikes the optimal balance between incentivizing creation and adding to the public domain?