I've always thought it's weird that it isn't the other way around. Matter, electrons, even photons ... isn't the building block of the university. Fields are. F

I've always thought it's weird that it isn't the other way around. Matter, electrons, even photons ... isn't the building block of the university. Fields are. Fields have gravity. I think it's really the reverse: why aren't there more fields that are simply self-sustaining? Such fields, if sufficiently reluctant to interact with normal matter and/or photons, would be exactly dark matter.