Acting on an afterthought is a formula for disaster
A guy I know likes to answer the question, "So, what do you know?" with: "Whatever the last guy I spoke to told me." Busy people are like that. Rushing around, e-mailing, text messaging, talking, etc., and not retaining a thing, save for whatever the last guy they spoke to told them. They remember that. You can tell because in a meeting, they always say, "Well, I just met a guy who told me..."