I mean, I envision them teaching you taking decreasing radius better or how to take turns that have hardly any grading, but they wont throw loose gravel in these areas like there is in the street. Or have a broke down car ahead when your taking a blind corner. Those are dangers Im not aware of. Track, pretty much everything is known about that particular surface and kept clear.
You are somehow both missing the point yet have a full grasp of said point.
The track makes you realize that there is a much safer place to push, with better traction, better safety, an ambulance or medical expert on site, no objects for you to run into, any objects you could potentially run into are first barricaded with gravel traps, hay bails, or air fencing, all traffic going the same direction as you, no intersections, no oil slicks, etc etc etc.
Simply put, riding in said, safe, controlled environment makes you realize exactly how dangerous the street is.
Crashing at the track reinforces that idea, and you find yourself looking at roads thinking to yourself "****, if I had crashed there I would have flown off a cliff" or "****, If i had crashed there, I would have been sliced into three pieces as I flew through the road barrier". But instead, cause you crashed in a safe environment you were able to pick your bike up, restart it, ride it back to the pits, and continue to ride and have fun the rest of the day.
Please tell my you understand his statement now?