Slipping in an extra paper is not the same at all; you are adding terms to the contract that the signer could not possibly have seen. By changing the small prin

Slipping in an extra paper is not the same at all; you are adding terms to the contract that the signer could not possibly have seen. By changing the small print you are being sneaky, but they had a chance to fully examine what they were agreeing to and were lax in that.