Earlier quoted context omitted.
Indeed, and there are cases where I want to be protected from my own inattention, when the stakes are high enough.
So my argument is wrong but you want to be protected from inattention???? You need to be fully awake when running tools, same goes for driving. They are both defensive activities. Maybe people are beating on me because I didn't say "for me...." but whatever. I stand behind my reasoning, it works for me. And I think the sawstop is just silly. Tablesaws, used properly, are just fine. If you are losing fingers can I int…
They've been default on new chainsaws since the mid 90s. That hand guard at the front is linked to a powerful brake so that if it catches and kicks back, it's very likely to engage that brake and save you a life-altering injury. They have centripetal clutches to disengage automatically and most require two points of contact and a disengaged brake for the throttle to work (common to many outdoor tools). Chainsaws still aren't safe —you'd be an idiot to use one without steel-laced trousers— but they are much safer than they were.
As I said in another comment, nobody needs this stuff until it saves their fingers, their hand, their face, their leg and their livelihood.
And that's what these arguments come down to. You (and some others here) think you'll never make a mistake or forget to move a hand or misplace their feet, or ever cut too deep in a bit of stock that was cutting fine last week. These are pretty stupid mistakes on their on their own but people aren't robots; they happen all the time.
Conversely I'm happy to say that I've been safe so far, but I respect how quickly that can change.