In many cases the parties seeking to rely upon the terms of the contract know or ought to know that the signature of a party to the contract does not represent the true intention of the signer, and that the party signing is unaware of the stringent and onerous provisions which the standard form contains.
In many cases, the parties relying on contract terms are aware or should be aware that a signer's signature does not reflect their true intentions, and that the unaware signer is unfamiliar with the strict and burdensome clauses contained in the standard form.