 A natural thought is that the basis for contractual obligation may be found in a vague promissory intention. Most promises leave room for further specification while still being sufficiently specific to produce reasonable reliance. Sam promises to help Susan move homes but without specifying whether he intends to labor personally or pay a mover. Sam incurs a general duty owed to Susan that can be variously satisfied. Modern contract law, moreover, is quite comfortable with filling in gaps in incomplete contracts (for example, imputing a market price where no price is mentioned: UCC: § 2-204(3)) and rendering vague terms precise (for example, fixing the payment meant by an employer’s promise of “reasonable recognition” for inventions made by an employee, see Corthell v. Summit Thread Co. (1933)). A consumer’s intention in agreeing to a form contract may be some underspecified form of compliance with its terms, which the law can render precise as it usually does.