So simple even Einstein could figure it out, and he over thought it for decades and left it unfinished because, well, anyone could just come along and unify it later.
So what does your intuition tell you about string theory vs loop quantum gravity? And don't over think it!
Heisenberg I respect that you are very well educated person, I had to educate my self, and I am grateful for that bc I have a very simple view of things, and I will always keep it that way. I respect that you have a much different understanding of Intuition and that you may see many flaws in my understanding. I do not even want to bother with string theory or loop quantum gravity, "do not fill your head with things that you can look up", and I will not give an opinion on something I am completely ignorant of. My field is Enlightenment, I only know as much about Physics as is practical to me. Of course Einstein couldn't figure it out and over thought it for decades, this was completely original, he had to make sense of that which did not make sense, and there is only so much time in the day, if Hawkings had the time he could complete the book of Physics, but he does not have that time no one does.
This is my understanding of Intuition, and this may seem completely far-fetched from yours. It is your Intuition that recognizes the counter-intuitive, it is your Intuition that Knows to go beyond the Paradox and seek the Truth, and it always Knows when it has arrived at the Truth. It is a natural process that takes place all of the time, it is literally how your mind works. You, the "observer", the "insightful one", the "witness", the "Knower", you are the Intuitive Mind, the process of your thinking is the rational mind, "the thinker", the faithful servant. Yes of course insight is fleeting, all things are fleeting except for Awareness, you are Still, Unwavering, you are the medium that allows the Thinker to exist.
I do respect that you may want to ignore this completely, that is fine I have no interest in convincing you of things, but I will keep this understanding bc it serves me quite well.
"out of clutter find simplicity"
"Truth is always to be found in simplicity and not in the multiplicity and confusion of things"
If your understanding of Intuition is practical to you then just keep it that way, there is no need for you to addopt this perspective, you are very intelligent and you function just fine without it.