I meant those roads where the sides are lower than the centre, near the curbs. When you’re near the curb, the outside leg easily touches the road but the nearside one not so easily. If the bike leans the wrong way, by the time your foot is fully down and you can use your leg muscles, the bike will be too far gone.
You will only fully understand once you’ve been caught out, and it’s not a situation that you’re likely to encounter during your training.
Another trick is to learn to never park front wheel first against a curb: bikes don’t have a reverse gear and even a slight incline makes it very difficult to leave.
All those things have little to do with getting your DAS and the sort of things you’ll learn by falling for them first. Learning to pick your bike up may also be useful