Garrett can sue Systek 22 under the doctrine of promissory estoppel.
The simple act of giving up a legal right—even something as basic as the ability to spend one's money on something else—is known as a "legal disadvantage." It could also imply that the party causing the harm refrains from acting in a way that would otherwise be appropriate.
The "something" that is promised or provided must be something that is known as a legal detriment—an act, forbearance, or a promise of such from the promise. It cannot be just anything, including a feeling of pride, warmth, amusement, or friendship.
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