I mean, how do I even know what I say before I said it? Speaking is such a social act, you can definitely pan out and say a few words (even if it's fillers) before your brain catches up and you create a plan. And then you adjust your plan based on audience response. The obsession with precision is strange. Vagueness in spoken language is a feature, not a bug. It makes social situations easier to navigate if you have an "out".