How are Dark Mtter and Consciousness different from Spirit?

[Alex K]

Which is kind of a bummer because modified gravity would potentially be much more interesting from a theory perspective than having one more type of particle. That's kind of exciting too, but the ramifications for physics if general relativity had to be modified would be enormous.

Just as quantum physics revealed a reality that required scientists to abandon the assumptions they had built around classical mechanics, yet after taking a couple aspirin, they did not shy away from it.

A few pages back you mentioned that dark matter may not have enough mass to be detectable by current technology. Is there no connection between mass and gravity? How can low mass particles provide enough gravity to hold galaxies together?

It's really that simple: if they have less mass in each one, there need to be more of them.