The Predictive, the Normative, the Volitional, the Promissory

The distinct ways of saying something about the future, or about possible futures, such as: These are, I maintain, among the most powerful linguistic distinctions that can be made.
Most of us, though, hardly ever think about them; hardly ever think "OK, I wasn't promising that -- that was just a prediction", nor do we wield these distinctions well intuitively.
(What is it to "wield a distinction well intuitively"? An analogy is that on a bicycle, one makes distinctions between the feelings associated with tilting to the right or to the left, and acts upon those distinctions without any conscious thought.) Illustrations of the muddle we are in with respect to the normative (or volitional)/predictive distinction. Reasons for the muddle:

"Will Power"