“How could the 1.4kg lump of moist, pinkish-beige tissue inside your skull give rise to something as mysterious as the experience of being that pinkish-beige lump, and the body to which it is attached?” Why can’t the world’s greatest minds solve the mystery of consciousness?

NB I am a French “learned ignorant” generalist. So, dont look at the wording of this comment, but try to understand its essence.
When we understand that to be conscious is to be conscious “of something,” the “hard problem” of consciousness will be solved.
For example, these “guys” inside our cells are “conscious” of something of which we are not:
https://i.gifer.com/RoDz.mp4 and https://www.youtube.com/watch?v=JnlULOjUhSQ
And it goes even further down the simplicity of “life.” Jean E. Charon (renown physicist), in De La Physique À L’homme, is explaining the “observer effect” in quantum mechanics by postulating “proto-consciousness” of electrons.

Ourselves, as human beings, what we are conscious of is “space and time.” No other living entities are conscious of these dimensions of reality. They all live in them, but none conceptualize them as we do. They all live the “instant” for themselves.
As Australopithecines and Homines, we did not “conceptualize” space and time either, but these notions were the unconscious assumptions allowing us to “objectify” the outside world. At first, it was the rocks we were using to survive in the Savannah, which needed to be there somewhere in space and in time as “objects,” so we transform them into tools. Moreover, later as early sapiens, at the outset of a not-yet accomplished journey towards self-consciousness, we also used space and time as unconscious assumptions to “objectify” our “inner world — as we do now during the second nine months of our lives; the first nine being used to “objectify” the outside world, to register events happening in it, c.f., baby laughter. Why do they laugh? Because the essence of comedy is the unexpected, and for them everything is.
Still, there was no conceptualization of space and time — neither then nor now for babies and toddlers. It is only with the Greek and modern sciences that we eventually had to conceptualize them to understand our relation to reality and the forces behind it.
However, learned scientists and philosophers don’t have these notions of space and time right yet. And, until they do, they won’t be able to understand the nature of “human consciousness” regulating our behavior, as we could not understand the force of nature regulating the “Heavens” when we believe the Earth to be fixed at the center of the universe, while still discussing how many angels fit on the head of a needle — which is what we still do while speculating about consciousness as a “hard problem.”

Now, it is the mass of scientific knowledge accumulated under wrong assumptions about time that is creating the “psychological inertia” preventing scientists and philosophers from understanding the place of humanity in the evolution of consciousness.
When we understand the true nature of time, human consciousness will be readily understood by all honest mind from 9 to 99. And we will then become able to find ways to control the force of nature that we have become after we understood that the earth was not fixed at the center of the universe but revolving around the sun like all the other planet.

I’m working at putting my findings about the nature of time on paper, in the same spirit as Giordano Bruno did about space in 1600…

I am a 74-year-old generalist, with two general BA and one unspecialized MA in ZooAnthropoSociology all undertaken to find out what’s wrong with humanity.