Final answer:
A promise which induces another to act to his or her detriment may create consideration in contract law.
Step-by-step explanation:
According to the principle of consideration in contract law, a promise which induces another to act to his or her detriment may create consideration. Consideration is a legal term that refers to something of value exchanged between parties in a contract. It can be in the form of money, services, property, or a promise to do or not do something.
For example, if someone promises to pay their neighbor $50 to mow their lawn, and the neighbor mows the lawn in reliance on that promise, the promise creates consideration because it induced the neighbor to act to his or her detriment. If the promisor fails to fulfill the promise, the neighbor may have legal recourse.
In this case, the promise to meet a friend after work could also create consideration if the friend relied on the promise and took some action to his or her detriment because of it.