Throw Dark matter in the garbage with it!
If we are going to jump into the pool of ignorance we should throw Dark Energy in the garbage, too.
To do that, one would need find some, first?
Then if you did (find some, for a certainty that is) it would be the greatest find since Pennzoil.
At first, they didn't know what to do with it. Tried to get rid of it, mixed it in with other "stuff" and bottled it, selling it as patent medicine. Then after a while discovered is could be cracked and people wouldn't have to put whales in try-pots no more...
Eventually, along about the time the mile-a-minute speed barrier was broken ---- that's how the Indy 500 became an invention.
Or so the theory weak hypothesis W.A.>geusstimation of what else will be figured out by then as for how matter, space & time interrelate; how everything really goes...
Never mind how many angels can dance on the head of a pin.
Speed (velocity) being relative...
When they appear (or are not seen) how fast do they fly?