Terrains I usually ski at (black & double black diamonds + yellows) tend to have accidental massive avalanches (i.e. randomly stepping on some 5x5ft patch that causes avalanche to fall), so I need to be prepared for any eventuality and estimate safety of the area. I have seen people diving head first on a steep slope, causing avalanches to roll, and they telling me they couldn't move while in the flow and their lungs being super compressed, making them unable to breathe. Especially in spring you need to be super careful as even a smaller wet avalanche can easily kill you - those are usually slow and stop all the way down in the valley, sometimes taking houses with them, crushing you with weight and without any chance to escape.