[notacoward]

It would help if you recognized that it's a philosophical concept, not a legal one. Maybe you've noticed that lawyers and other people often use the same words with sharply different (and often counter-intuitive) meanings. Thus, legal requirements for what constitutes a contract do not apply. Neither do legal standards about specificity, enforcement, etc. You could argue that it's a bad term, but to argue that the thing itself is deficient because it doesn't meet legal standards is a bit sophomoric.