Defending your space for the good of everyone.
Part of calm driving is protecting your space. Accepting risk because you want to be polite can effectively destroy all the preventive habits you work so hard to build. Yes, it takes understanding and energy to build these protective habits, many of which go against ingrained habits, but why are you paying me for my extensive crash understanding if you are going to dump the habits the moment you leave? If it was easy, everyone would be doing it. It is not easy, but it is critically essential for a lifetime of lowest-risk driving. Did you toot your horn today?