I keep re-reading this and I just have to admit that I sincerely don’t understand. What runtime behavior is potentially crash prone in the first place? Are you

I keep re-reading this and I just have to admit that I sincerely don’t understand. What runtime behavior is potentially crash prone in the first place? Are you saying stricter behavior would be more crash prone, or less? Which languages are more likely to be susceptible? I’m baffled and truly don’t mean to be dismissive.