The loading process for a 1911 is pretty ingrained for me...enough so that I really
have to be careful when running malfunction drills. A couple times I started a malfunction drill with one in the chamber.
If you are 20 feet away from a knife wielding psycho, and your gun is holstered, you're gonna come out of this second best. The knife wielder will close & cut you before you can draw & fire every time.
The "21 foot rule," based on the Tueller Drill is an average. Some people can win that race.