Competition time is 10 years max at the very high level with the usual few exceptions, and sometimes what was working stops to work, either due to injury, chang

Competition time is 10 years max at the very high level with the usual few exceptions, and sometimes what was working stops to work, either due to injury, changes in weight or power, or competitors "figuring you out". For example, Riner was so physically dominant that as soon as he had the grip, it was flight time. Maybe he had a sasae too, I don't remember. Most players play "opposite" techniques, for example osoto-sasae is a classic one in judo. For lower level/amateurs/"lifers" the math change, but at that level it is a bit more (or a lot more) about having fun, not destroy one's body and other concerns not related to high-level competitions, so more techniques can bee added to the arsenal. I bounce between specialization and breadth because on the one hand, I want to "win" also in practice, on the other hand "win" what exactly?