[kitbrennan]

It is true for business contracts that the written word is considered the ultimate authority. The principle is called 'caveat emptor' which can be translated to 'buyer beware'; essentially a business that enters into a contract is expected to read that contract and consult legal advice.

That said, there is protection for consumer contracts. In the UK you have the Unfair Contract Terms Act that protects consumers against businesses attempting to discharge liability to negligence. Europe wide you have the Unfair Terms In Consumer Contract Regulations which prevents businesses from inserting onerous terms into contracts with consumers that are not 'individually negotiated' (eg. almost every contract that a consumer signs without using a lawyer).