[yor_on]

To put it simply. If I'm a collection of matter waves over (in) time, what keeps me coherent? The 'particles' I consist of is a more understandable description to me, as in 'we consist of stars dust', and '(most) atoms lasts forever'. It's not that I find it wrong, just not the whole truth.

Ps: and yes, the first is a slight word game.
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Now, if you're an adventurous person you could connect this to 'many worlds' hypothesis :)
Just by allowing the Copenhagen interpretation to be valid, then assuming that a 'particle' won't 'exist' until 'measured', also allowing the matter wave to extend " Take a particle that we localize to just one place, so its matter wave is a spatially localized pulse. Left to itself, that pulse will spread out in all directions as propagating waves. It is just like what happens when a pebble hits the surface of the pond. The localized splash immediately spreads out in broadening ripples. That type of behavior is called "Schroedinger evolution," because it is governed by Schroedinger's wave equation.That equation just says that matter waves propagate like waves."

Just one thing missing here, the 'observer', as the 'wave' is nonlocalised until measured extending all through whatever there is, and as I suggest we ignore 'dimensions' for this, we can assume that the 'observer' is what makes it 'exist', and there is nothing stating that there must be one single observer, is there? Alternatively you might want to include,  if adding 'dimensions', that to avoid a breakdown of 'internal logic' belonging to any sort of dimensional 'reality' you will need a 'many worlds' scenario in where the observer force a bifurcation when observing. You could make it even more intriguing by allowing observations to be what defines 'time', After all, without them, where is time?

But as I said, only one thing missing, the 'observer'. From where will you get it?

[rmolnav]

If I recall correctly, we did find a way to differentiate between acceleration and gravity in another thread.
I've no idea how to find that now, but could find the distinguishing factors.

We discussed this topic in:
https://www.thenakedscientists.com/forum/index.php?topic=71799.0
Is that the one you recall?