Partially agree, I’ve been doing trampoline for six years and fear has definitely saved me a few times, it stops me from doing things I’m not ready for physically or mentally, and definitely it can also hinder a lot and I know this one guy who seems completely fearless and has progressed a lot faster than I did and I envied his fearlessness for a long time, but now moving onto big and scary elements of trampoline I realize that fear is definitely useful to some degree to make rational decisions and know when you should leave something for a better day, but it can also be a real problem with bigger skills which will always be scary no matter how much I know I’m physically ready for them. (sorry for the ramble, just wanted to add on my two cents as I was also interested by his comments on fearlessness)