Mountaineer wrote:but you may wish to ponder WHY death exists - not the fact that cells die, wear out, or whatever, but WHY.
... Mountaineer
I am reading Bill Bryson A Short History of Nearly Everything. The first few paragraphs are below. Definitely got me thinking about all this...
Or we could all just be a computer simulation like Elon Musk thinks.
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To begin with, for you to be here now trillions of drifting atoms had somehow to assemble
in an intricate and intriguingly obliging manner to create you. It's an arrangement so
specialized and particular that it has never been tried before and will only exist this once. For
the next many years (we hope) these tiny particles will uncomplainingly engage in all the
billions of deft, cooperative efforts necessary to keep you intact and let you experience the
supremely agreeable but generally underappreciated state known as existence.
Why atoms take this trouble is a bit of a puzzle. Being you is not a gratifying experience at
the atomic level. For all their devoted attention, your atoms don't actually care about you indeed,
don't even know that you are there. They don't even know that they are there. They are
mindless particles, after all, and not even themselves alive. (It is a slightly arresting notion
that if you were to pick yourself apart with tweezers, one atom at a time, you would produce a
mound of fine atomic dust, none of which had ever been alive but all of which had once been
you.) Yet somehow for the period of your existence they will answer to a single overarching
impulse: to keep you you.
The bad news is that atoms are fickle and their time of devotion is fleeting-fleeting indeed.
Even a long human life adds up to only about 650,000 hours. And when that modest
milestone flashes past, or at some other point thereabouts, for reasons unknown your atoms
will shut you down, silently disassemble, and go off to be other things. And that's it for you.
Still, you may rejoice that it happens at all. Generally speaking in the universe it doesn't, so
far as we can tell. This is decidedly odd because the atoms that so liberally and congenially
flock together to form living things on Earth are exactly the same atoms that decline to do it
elsewhere. Whatever else it may be, at the level of chemistry life is curiously mundane:
carbon, hydrogen, oxygen, and nitrogen, a little calcium, a dash of sulfur, a light dusting of
other very ordinary elements-nothing you wouldn't find in any ordinary drugstore-and that's
all you need. The only thing special about the atoms that make you is that they make you.
That is of course the miracle of life.