 Even if a principle that enforces promissory expectations cannot reasonably be rejected, this still does not fully explain why the law favors expectations. Some alternative remedy might equally fall within the bounds of moral principles no one could reasonably reject. For instance, the law could compensate based on reliance damages, returning parties to their pre-contractual state in the event of breach. Of course, the practical difference between vindicating expectations and reliance-based losses is not always substantial. Lon Fuller and William Perdue (1936) discuss cases where the two remedial schemes converge, as when markets are thick. Where a promisee’s reliance on her promisor includes forsaking an identically attractive offer, then the promisee’s reliance interest arguably equals her valuation of performance—that is, her contractual expectation. Moreover, a number of legal rules cabin the expectation remedy by imposing requirements of foreseeability (see, e.g., Hadley v. Baxendale (1854)) and mitigating one’s losses (R2: §350); and the law sometimes opts for reliance damages where expectation is hard to measure (see, e.g., Sullivan v. O’Connor (1972)). Still, reliance and expectation are not always congruent, and the law’s clear preference for the latter requires an explanation.