>>415477>The Ten Essentials weren't dreamt up by REI. The list was developed by mountaineers who actually go outside, unlike you: I'll try to break this to you gently. I looked at that list. Yes, everything is certainly essential. Stuff that I'd internalized by age 11, while camping with my parents in Mexico and Oregon.
It's an excellent guide for Cubscouts and the like. Or people who need a checklist to remember pants and shoes before leaving the house.
In regards going out, I'm on the left in pic related. Ross Ice Shelf in the early 80s.