; )

-cvj

Progress at what? Assuming that one limits one’s calculations to the part of the universe that is inhabited by us, how does relativity help us with anything other than very high precision involving satellites?”

Progress in understanding how Nature works, plain and simple. If you wish to put your head in the sand and pretend that g is 10, and so forth that’s really up to you. If you’re only interested in learning things about the world that yields applications, to “help us” do things, then I’ve little to say, really. I personally think that there’s much more to the world than just looking for ways to feed, shelter ourselves, and procreate, but you are certainly free to be only interested in those things.

Cheers,

-cvj

Progress at what? Assuming that one limits one’s calculations to the part of the universe that is inhabited by us, how does relativity help us with anything other than very high precision involving satellites?

In fact, we can further simplify Newtonian gravity by assuming that g=10m/s^2 (within about 10%) for the entire depth of the mantle*, because of the density structure of the Earth. This, in turn, makes tthe math of mantle physics a lot simpler.

*Nobody aside from Omanis and French colonists lives on the mantle, but its dynamics control the habitability of the planet, so it is a useful thing to understand.

The relativity and quantum views are so opposite of each other, it’s no wonder why we struggle developing quantum gravity.

Thanks,

-cvj