Probability depends of the behavior of the elements that influence probability. So we are still on track.
Probably. Some call it behaviour, others might say price action, market analysis, TA, etc. Same kind of oils, different names! lol
"How other people are today" is reflected in what buyers are willing to pay and sellers are willing to accept. As to what that means, one must look at context, or structure, or architecture, i.e., how the auction market functions. "lol"
The probability that traders will behave one way vs another. Which is the basis for behavioral economics and thereby behavioral finance, nearly all of which stems from Charles Mackay and Gustave Le Bon.