Quick! Get the Flexseal.

imho gravitons are the key to interstellar travel. we need to find a way to aggregate and harness them

This guy is mostly famous from poor quality history channel scifi bullshit "documentaries".

To be fair, this is the level of physics where if they discover things right out of fantasy book (teleportation, mind reading, transmutation etc) I wouldn't be even surprised.

What's a parallel dimension?

I've been insisting this for years:

it eradicates the bullshit of hyperinflation being required to smooth the CMB,

it explains why gravity's sooo weak, compared with the contained-within-this-3d-space forces, like electromagnitism,

it explains why there exist galaxies of dark-matter which don't have any conventional-matter,

it explains why there exist galaxies of conventional-matter which don't have any dark-matter.

The gravity's diffusing through MANY 3D-spaces, not just ours.

the other forces are contained-within-this-3D-space.

Therefore OUR gravity is "dark matter" in other 3D-spaces, too.

The smoothing-of-the-CMB is simple: instead of 1x 3D-space having hyperinflation, there are thousands of 3D-spaces ( or zillions: whatever the math says matches ), & EACH of them inflated at speed-of-light or less, not at zillions-of-times-c.

The painting-method called "glazing" is essentially the same idea:

da Vince used many many thin layers of paint, to make ultra-smooth tones..

the many-many-many-3D-spaces all "underlying" each-other smoothes-out the gravity among them all, so local-lumpiness simply isn't a significant part of the equation, as it would appear.

Part of this is on the E = speed-of-gravity * mass * speed-of-light, though, so it's arithmetically identical to the conventional E=mc^2 rendition,

but would gravity & light both be traveling at the same mps speed through say a 100km of quartz?

XOR would the refractive-index be different for gravity & light?

That structural difference is what the speed-of-gravity * mass * speed-of-light variant was trying to show.

_ /\ _

parallel dimension

Aren't dimensions by definition orthogonal?

I thought this guy was a legit scientist, but I read his recent book Quantum Supremacy and it was all shit like "with quantum computing, in the future you will be able to solve athlete's foot". Literally everything you can think of is going to be quantummaxxed by cubits, according to him. Need your car serviced but the garage isn't open on Sundays? Quantum computing. Need your mother-in-law to dial down the snarky comments about your new house? QUANTUM COMPUTING. Frequently walk into a room, forget why you went in there, leave, then immediately remember why you went in the second you cross the threshold? MOTHERFUCKING QUANTUM COMPUTING!

I'm sure he is a legit scientist, of course, but as a science communicator and terminal book-hawker, he's no better than Joe Rogan.

The thing with dark matter is it's just a placeholder term for "we don't know what the hell it is", and aren't most hypotheses pulled out of the ass before experimentation to prove them?

Plus, Dr. Kaku is a string theorist so wacky is pretty much par for the course in that field. Granted, I consider him more of a TV personality these days and grew up watching him as a speaker on [insert any number of Discovery Channel shows here].

Maybe I'm just biased and enjoy the wacky theories because I'm more interested in seeing them proven right or wrong and thinking about the implications if they happen to prove correct.

What if dark matter is a time artifact of gravitational waves over time/space as particles with mass travel through time/space? (I am not a physicist and I don't understand jack shit.)