The Limits in Learning an Infinite Art The other day, I was teaching a kids’ class covering headlock escapes at Ralph Gracie San Jose, Ca. I had Josh, my uke (the person you do the move on), place me in a headlock, and I demonstrated one of the escapes I knew. The kids loved it. Later in the class, a young 9-year-old boy, particularly fond of the technique, asked me, “How much jiu-jitsu do you NOT know?” I found this to be profoundly thought-provoking. Two students sparing at