You pay the contractor half the price agreed in advance. The contractor completes about a quarter of the work and then stops. They keep promising that they will come back and do the job, but they never will. By failing to keep his promise, the contractor breached the contract. However, it is important to take into account, in the context of the contract, and not as in the past. For example, in the first English case of Eastwood v. Kenyon , the guardian of a young girl, took out a loan to educate her. After her marriage, her husband promised to pay off the debts, but the loan was considered a historical value. The inadequacy of previous considerations is related to the existing customs rule. In the first English case of Stilk v. Myrick , a captain promised to divide the salaries of two deserters among the rest of the crew if they agreed to set sail; However, this promise was found to be unenforceable, as the crew was already in charge of the ship`s navigation. The existing customs rule also applies to general legal obligations; For example, the promise not to commit an unlawful act or crime is not enough.
 Agreements are often contract-related; However, «agreement» generally has a broader meaning than «contract,» «good deal» or «promise.» A contract is a form of agreement that requires additional elements, such as consideration.B. The term «agreement» is broader than «contract» because «any contract is an agreement, but conversely, it is not possible.» Indeed, all contracts contain the elements of the agreement, i.e. supply and acceptance, but not all agreements contain the main element that constitutes a contract, that is: