dark matter only exists because without many theories such as “Strings” would fail.
Can you see it? No
Can you touch it? No
Can you feel it? No
Can you measure it? No
Then do you know it is there? Yes
What??? Well it has to be
I don’t know about all that, but you could certainly SMELL the dark matter I recently had pumped out of my septic tank.
I thought they had evidence of Dark Matter based on its effects on light that mimicked gravity.
“...looks like it, smells like it, tastes like it...good thing we didn’t step in it...”