It might rather be the case that we've managed to "displace" ourselves (for the purpose, for a time, for a specific purpose). In fact, it's a trick that I think many stutterers have experienced - the trick of pretense. Trying to dodge our own personal attachment to whatever we're doing, or dodging our specific mode of communication by using a different sort of performance. As for efficacy, that's a fickle thing, I think. It varies. Like stutter itself, really.