There's no way anyone but me can know that. Even a brain scan
that shows activity that's theoretically prior to my conscious
awareness of it doesn't negate my choice in the matter.
It is true, of course, that we do things and then tell stories
about why we did them after that fact. We justify our recent
past (now) actions against further past patterns to try to
explain "what just happened", predicting / anticipating certain
responses form the environment based upon past experience.
In short, we're always comparing the past with the past.
Just the same, it doesn't negate the freedom of my choices.
