We humans are the only animal that worries about this shit.
All other animals just procreate and die, with no worries.
That makes them smarter than us.
exactly.
The human mind is overdeveloped with too much self-awareness, and has now become evolutionarily burdensome.
It reminds me of peter zapffe talking about certain species of deer in paleontological times who acquired very large and heavy horns through evolutionary mutations, which ended up being their demise as their weight ended up pinning them to the ground.
Humans are being pinned to the ground by their overflowing self-awareness and consciousness.
People who meditate still have their functions of the cortex working, so it is biased to say that they did not remember anything
I don't think there have been any experimental studies to determine this question one way or the other.
Just going by what people relate, and their accounts of such experiences, memories don't seem to play any role.
It's just pure experience which is divorced from the concept of a self, an object-subject distinction, or any conscious memories.
But who knows, maybe basic residual memories play some kind of part in these experiences.
This is all undecided.
Even if physics concludes that this is true, then how does it apply to the conscious? Something that is not made of matter?
I don't know.
Maybe consciousness is a form of matter/energy, one that we haven't been able to detect yet.
If consciousness could have existed all this time without memories, then it means that memories had a beginning. Which goes against the idea that "everything has always existed, nothing has a beginning"
If memories have always existed throughout our existence, then it is up to you to explain where our past life memories are
Memories have a beginning yes.
But a beginning of something is only possible because of the end of something else, and the line separating both is arbitrary.
It's like, when did the human species start? There isn't one specific point in time that marked the beginning of humanity. Very subtle genetic mutations which themselves depend on atomic and subatomic processes are involved in evolution, as well as the more determinate effects of natural selection on large populations across vast timescales. It's not as if one day the first human was born who couldn't pass its genes on to the members of the species of its parents.
So although we can separate things into beginnings and endings, this is arbitrary and says more about how the human mind divides the world than about external reality itself.
An extreme expression of this view in metaphysics is 'mereological nihilism', which denies that there are any objects with proper parts (trees, buildings, animals, books, boats, stones, etc, which are all the mind's way of arranging and classifying the raw data of experience), and that only simple things with no parts really exist (presumably whatever turn out to be the most fundamental particles).
As for past life memories, I don't know.
Maybe past life memories died with whoever had them in the past.
Maybe they are somehow preserved in a field of consciousness which underlies the physical universe.
I'm not saying I know or have the answer to anything, I'm just exploring ideas.