But it is hard to understand how, if the overall purpose of the Copyright Clause is to encourage creative work, how some retroactive extension could possibly do that. I -- one wonders what was in the principle 13 difficult principle given to Congress and has been exercised so repeatedly out there that would ever kick in?

Based on that paragraph can we conclude that this sentence is true?
the Copyright Clause protects big businesses

Choices:
[-] Yes;
[-] It's impossible to say;
[-] No;
It's impossible to say