[bicycletricycle]

Correct

Originally Posted by fa63

Risk is defined by many as the probably of a failure occurring times the consequences of that failure. In this case, the former is quite low but the latter very high.

Obviously many people are riding hookless with no issues. It is just that hookless rims have a decreased safety margin compared to hooked rims (on a very safety critical component), and that can be catastrophic for a few unfortunate. And all for what appears to be so that rim manufacturers can save a few grams and a few bucks.