The Hamlet Project

It is very hard to swear to something before you know what you are swearing to or for. You could blindly raise your hand, swear that you will swear whatever swearing comes subsequently but no one will believe a blind swearing. You can say you will swear to whatever comes next but until you actually hear what you’re swearing, the oath is meaningless.
It’s like promising not to laugh. You can do your best to control what your response will be to whatever comes next but in all likelihood, if whatever emerges after a request to laugh is funny, you will not be able to stop yourself.