On bowing and wrestling

This is done for a variety of reasons: entering the dojo, stepping on the mat, leaving the dojo, the beginning of class. All of which can be tied to respect, for the dojo for the instructor, for a philosophy. There are also more practical motivations at work. You bow, but you do not take your eyes off an opponent because he could be sneaky, wack you with your head down.
On occasion a Sifu will interrupt a drill between you and a partner, he corrects you, you bow. The bow in this case signals the teacher believes you are worthy of correction to not bow could be construed as a grave insult.

The Wednesday evening class is mutating into a greco-roman/bjj laboratory. More attention to stand up, take-downs, sprawl, cultivating the swim, etc. Then a bjj technique or two and then we roll.
College boy and I started rolling from a standing position. I came close to taking him down. I hit an inside the leg reap but...nothing. The energy was gone, and he got the best of me as always/ The ending though was different.
"You didn't commit. you didn't put your hips into it"
I've been training for a year; this is the first time he's ever given me constructive criticism.