In “Suits” a deal was made written on a napkin. Mike Ross, t…

In “Suits” a deal was made written on a napkin. Mike Ross, the protagonist, says that only three things are needed for a contract, (i) offer, (ii) acceptance, and (iii) consideration. Harvey Spectre, the Partner overseeing Mike, says that “competence” is also required. While it is true that competence is required, the actual element required is called something else. What is it and what case is the clip emulating?    See here: Contract Law in Pop Culture