something that isn't well defined can't exist.
People before gravity was well defined:
I'm an amoralist and a determinist; I only disagree with you on the basis of claiming these things as fact
It's more like, "people before smorklank was well defined"
"Well, but smorklank exists, or it doesn't, what do you think?"
People before gravity was well defined:

I'm an amoralist and a determinist; I only disagree with you on the basis of claiming these things as fact
It's more like, "people before smorklank was well defined"
"Well, but smorklank exists, or it doesn't, what do you think?"