Their complaint: that pharmacy benefit managers, which design health plans for companies and insurers, offer retailers a take-it-or-leave-it contract that makes it impossible for them to compete on drug prices with mail-order houses.

FORBES: There Oughta Be a Law

If an act of nature, a specific supplier or some other uncontrollable act can make it impossible for you to fulfill a contract (and thus open yourself up to legal action) then you should be putting to ink that you are not liable for incomplete work due to these factors.

FORBES: Don't Get Sued: 5 Tips To Protect Your Small Business

This common law concept relieves a party from fulfilling a contract if unforeseen circumstances make it impossible to do so.

FORBES: Collateral Damage

The law basically says that you must do everything you can to fulfill a contract, unless it is all but physically impossible to do so.

FORBES: Collateral Damage

It's now almost impossible for management to get a policy on a player contract, at least past the first year or two of a long-term deal.

FORBES: Magazine Article

Part of the problem, he argued, was that some economic transactions are so complicated, and involve so many things which could go wrong, that writing a legally enforceable contract that takes all possibilities into account is impossible.

ECONOMIST: The Nobel prize for economics

The way the tendering process was conducted was so opaque that it is impossible to know the precise reasons why the Prison Service Board awarded the contract to its own in-house bid.

ECONOMIST: Prisons

But even with foreign involvement, and even if a bankable electricity sales contract with Thailand is put in place, it would still be almost impossible for Laos to raise the necessary money.

ECONOMIST: Laos

Patriarch denies it breached the contract and claims in its pleadings that is wasn't obliged to transfer the assets because it was impossible to obtain the investment-grade rating for those notes.

FORBES: On The Cover/Top Stories