Umm

No

oh, no?

so, GR perfectly explains the rotation of large scale galaxies?

*invented*

Dark matter is an explanation for why there’s so much gravity in a galaxy

lol

We don’t understand dark matter but we know how it interacts thru gravity

no, my friend. it is *assumed* there's much more gravity.

to make that assumption, we need dark matter.

otherwise GR can't explain it.

oops

It’s not assumed it’s known

so dark matter was created as an *oh fudge, we need this or gravity fails*?

We can see it’s gravitational effects

not as simple as that, but yes. It's a mysterious substance we can't see or detect but we need it to be there for GR to make sense.

It's entirely possible there's something missing within GR that can account for macro scale gravity without needing dark matter. Some scientists don't even believe in dark matter.

Well GR is known to be an incomplete theory. Again, no one is denying that

Okay, good.

But it works for what we need it to do

We also can detect it through gravitational lensing

Dark matter

Sort of. Quantum renormalization would be pretty good to know.

The flat earthers here would say those gravitational lensing photos are fake.

Gravity is non renormalizable

yes, I know.

It’s not a true force

I’m not sure if most flat Earthers understand gravity at all

They dont

If they did they wouldn’t be a flat Earther

That's the discrepancy between quantum scales and Minkowski spacetime.

Right

Anyway my point from earlier

If gravity behaved as we measure it, but on a flat Earth instead, there would be many strange consequences

right. That's why they don't believe gravity is real.

That would be awfully fun to measure lol

Since even plants are known to respond to gravity

And even our bodies

Yep

Water would flow to the centre like a big sink