> I'm very happy to this day I've asked for that screwdriver and I fixed that seatbelt.

That was a great move!

I guess in a thread on an article which mixes a little bit of mysticism into medicine, a little science philosophy fits. I take the plain reading of quantum field equations at face value. I.e. that superposition is real in the normal sense, and that quantum "collapse" is a perceived effect, not actually the superposition reducing to one history, but just the effect of a history becoming entangled with enough particles to be robustly statistically separated from other histories.

(I have never understood why even some scientists can't take the equations at face value, when they already explain why large things don't act like individual particles, despite following the same rules. Without any "observer" voodoo. It as if those scientists agreed the equations say the Earth orbits the sun, and that calculating that way is the right way. But still propose there is some as yet gap in our understanding, that we need to resolve to make that consistent with our perception that the Sun goes around us - despite no actual gap that needs explaining.)

So given that interpretation, we are likely to always (to a high statistical degree) survive scary situations. We may not make it through a high percentage of histories, a high percentage of others' histories may experience us dying, but we of course, are only aware of the histories in which we make it. This also creates an explanation for why we, as a particularly constructed human, exist. We are simply aware of the history in which we are. Not any of the overwhelming number of histories of our universe in which we are not.

Among all the histories of the universe, given that they include every possible (consistent) history, and given that we are just normal chemistry despite our complex construction of statistically unlikely survivals, some have to include us.

That explains (1) our lucky survivals (of ourselves, others certainly experience us dying), (2) our initial personal existence, and (3) the existence of life on Earth. And if there are superpositioned variants of universe laws in a similar fashion (we don't know that yet, but it is a credible idea), (4) why there are histories of universes with laws consistent with us. If it's possible in terms of physical or the ultimate laws, and all consistent possibilities exist, then it is a certainty that there is a version of reality which includes us. And that is of course, where we find ourselves.