self-referential causes of existence

You must have come across such twists in life. Here's an example :


The Terminator goes back into the past to kill Sarah Connor. All of him gets destroyed except one arm. Cyberdyne reverse engineers the chip(s) in that arm and builds something that eventually becomes Skynet. In the age of Skynet, the Terminator himself is born.

Hence, if the Terminator hadn't existed, he couldn't have existed. Tough one, but there it is.

Ever seen a signboard which says "Beware:This Board Has Sharp Edges"?
What, exactly, is the reason for its existence ? We don't _need_ a board like that , but should one turn up, its presence would, itself, give rise to various possibilities arranged around it - people might stick posters on it and hundreds could show up at a play or a music concert,someone could stick political bills on it and probably swing a local election ,or which might help the local lose a hundred pounds and whatnot.Just saying. There are possibilities. Someone might even, sadly, cut themselves on the sharp edges in spite of the sign's best efforts. ( Apparently such people are crucial ingredient of the universe as we know it )

Not really a non-entity, is that board now ? Should we be even think of it as a non-entity ?
Looks like putting function before form is folly. Foo foo foo. Ignoring reality always is.

I guess such attractors come and go, which give rise to these no-reason-to-exist things, but the question remains whether selves exist which do not share this looped reason for existence ?

Do we in our eagerness to look down smugly upon these seemingly destiny-less creatures ignore our own loopiness ? Are we here because,basically, we're here ? and isn't destiny over-rated anyway ?

If one is the master of one's own destiny, doesn't it mean one has no destiny ?

What if humans were conceived,designed and shot out from the brow of the Creator for the sole purpose of moving cars from place to place ?