i personally find all this talk about "moving like smoke" or other (bad) metaphors as distracting. what does "move like smoke" or "capture smoke" mean anyway? sounds too mystical or unrealistic to mean anything applicable to the physical and mental aspects of studying martial arts or sports. you might as well say "build up your ki". both metaphors mean absolutely nothing, so what's the point of even attempting to train to "capture smoke". muhammad ali lost fights and was punched repeatedly. so did masahiko kimura and helio gracie (famously to kimura). at a high level nobody is invincible. dan carter occasionally gets tackled. lionel messi remarkably goes a few minutes at a time without scoring a goal. all we can do is train honestly and yes let go of our ego and work as hard as possible, both physically and mentally.