Thats only true if the contract is largely rational and decent.
but would not be true for instance if I said you must pay or I get rights to sleep with your wife or force you sell your blood. That goes beyond 'the reasonable man' statutes.
It has to be 'reasonable' or its not enforceable. Most people dont know that and get roped into rip off deals by business and government all the time... the fact that you signed does not mean you have to pay if payment puts you into an unviable, (not survivable or undue damaging position) therefore unreasonable situation.
There are laws that address this.
For instance lets say you owe me 2 dollars all legal... I cannot force you to sell your heart medicine pills to pay me... your life is worth more than the 2 dollars in the scales of justice....none of this is widely known, but if you know that you can write better contracts, be a more decent person, and prevent some asshole from ripping you off with a bogus contract (and those are getting more and more common from corporations today, especially the phone company, but ongoing litigation and law suits have prevented them for instance from cutting some sick old ladys life line by killing her phone service for non payment)
etc. The actual law is not what most people some idiot attorneys think it is... there is also the issue a right to a jury trial and what a jury will allow... they will not allow a creditor to decimate your life and starve you do death for instance.
Maybe.
If the contract contains any unfair, criminal, bogus or unreasonable clauses though the entire thing can be thrown out by a judge or a jury on the basis of it being deceptive.
What contractors and many large corporations tell people 'you signed you are liable' is only true if there was no deception or unreasonable aspects involved when enforcement time comes.
Now before you get hot and argue let me fill you in...first I am no genius, and am not a lawyer. But I am 64 years old and have written and negotiated hundreds if not thousands of contracts in my life large and small and been party to as project consultant to contracts well over 100 million dollars...ive seen all sorts of problems and lawsuits and messes hitting the wall and read many books and talked to dozens of lawyers on these issues...and administered many contracts.
the bottom line...you cannot try to force blood from a turnip no matter what your contract says...people that write and try to enforce those think it protects them...it doesn't. Ive seen 10 million dollar jobs run up to 50 million because some idiot thought he could enforce a contract on a contractor going bankrupt.... sorry...not workable. Better to work the situation out.
Once you beat a contractor or the reverse a customer into the dirt everyone looses. The contract is mute compared to the larger issues.
I typed this..I will not retype it. If there is some agrument read it again or get smart with me... this all Im going to say on the subject.
Phil Scott