It reminded me of something we do at the Yamaha Champions Riding School, when the class drives karts during the three-day schools. Before the karts roll, we have a drivers' meeting and stress this: Don't be running into people. But then we add: And do your best not to be hit. We want our students to see the issues coming, to see that the other student is about to slam the door or spin, and do whatever it takes to avoid it. Not only does it make the karting more fun (actual driving as opposed to bumper-cars), but it puts you in the mindset of sacrificing everything to not get hit.