Jeff Morris wrote:

You might make a case that the centrifugal explanation is easier for some people
to understand, but claiming that gravity doesn't cause the tides is just plain
bogus!

What are you talking about? I never said that gravity was not a part of
the equation.


Let me repost:
"The gravitational force acts only toward the center of mass of the
system. This cannot by itself produce two bulges."

Note the "by itself".

I'll repeat myself, the key is to understanding the _two tides_ problem
is that the system is rotating and "centrifugal" forces are balanced
only at the centers of the masses by gravity.

Cheers