I’m not particularly good at any one thing. I have a PhD, but not in a subject that’s “practical” in the post apocalypse. I’m physically fit enough, but I’m not a paragon of strength or agility. Relatedly, I’m in my mid30s, so not old, but not spry either. I’m handy enough to fix things with instruction and some light jury-rigging, but I’m hardly a Macguyver-type. I’ve never fired a gun before, but I can probably learn to use one.
Assuming I’m not killed instantaneously, or shortly thereafter, I’m an extra set of hands or an additional mouth to feed, depending on your perspective. Charitably, I’m analytically-minded and useful enough in the field, low to middle management type; less charitably, I’m an NPC type that happens to have some amusing dialog.
In a movie or tv show following a group in the post apocalypse, I think I’d be like the 4th to die; dignified enough to have established a minor story arch, but certainly not enough to be a main character. Also not so unimportant that I’m killed off screen (or worse yet, ret-conned).
I’m going to qualify this—all vertebrate eyes have a blind spot. Cephalopods also have eyes that are like vertebrates (this type of eye is called ‘camera eyes’), but their eye anatomy is such that no blind spot exists for them.
Piggybacking on your fact about the brain effectively editing what we visually perceive, we don’t see our nose (unless you made a concerted effort to look at it) because the brain ignores it.