LV4-26 said:
I promise is a performative verb, isn't it ? There's no other way of promising than saying you do. Saying it is doing it : I think this matches the definition of a performative expression.
There's actually interesting ethical debates about the performativity of promises. Because I promise is only part of the equation.
I promise I'll post tomorrow.
But what kind of pending information is left unsaid, can we assume the speaker means, as long as I don't get busy, as long as I am still live, as long as it's actually necessary because people are searching for information. A promise is a complicated act that requires a certain amount of assumption.
See: I promise I'll live forever.
That's a ridiculous promise that can't be fulfilled and no one will punish me for failing to commit to my promise. Sometimes a promise is nothing more than absurd speech.
Now an
oath is a performative act because it's a special kind of promise with specific guidelines. But how many oaths do you come across?