Just like we couldn't sample gamma rays 200 years ago or why we couldn't detect neutrino's a hundred years ago. They were everywhere and we didn't know it.
How many neutrinos do you see fly through your eyeballs each day?
Though now we know that neutrinos are there. Quark or string level for dark matter?
Is one day like, just during the day? Or is it, like, uh, day and night together ?