[GourmetDan]

"My assumption is, you need so called fictitious or pseudo force to explain with a geocentric model what you see or you do what Einstein and Infield explained: "Can we formulate physical laws so that they are valid for all CS [coordinate systems]". You have to alter the physical laws if you use a non-inertial reference frame."

You have it backwards. In a geocentric model, so-called fititious or pseudo forces are generated naturally. It is GR that is forced to call them fictitious or psuedo forces, not geocentricity.

"You can stay with your geocentric model but I won't believe you'll be satisfied to calculate a flight to the moon properly with your physical laws."

Your ignorance is astounding. Geocentric models are used to calculate moon flights. The only time the sun is used is for interplanetary flights. Educate yourself.

"Einstein and Infield were talking about a mathematical trick."

Wrong again. They are talking about the foundation of GR. CS are interchangeable by definition.

[Dominic Harr]

Geocentric models are used to calculate moon flights.

No, they're not . . . unless you mean something *very* different by 'geocentric/heliocentric'.

'Geocentric' doesn't mean that you only use the earch in calculations . . . this is your error here, I see it now.

What do you think heliocentric means?

[MHalblaub]

"You have it backwards. In a geocentric model, so-called fititious or pseudo forces are generated naturally. It is GR that is forced to call them fictitious or psuedo forces, not geocentricity."

Now something moving:

Coriolis effect


"Your ignorance is astounding. Geocentric models are used to calculate moon flights. The only time the sun is used is for interplanetary flights."

system earth-moon

Good look for your space ship!


"Wrong again. They are talking about the foundation of GR. CS are interchangeable by definition."

This is only true within physics for inertial reference frames or non inertial reference frames with the same acceleration vector. If not you have to change your physics.
Have you ever tried Hamiltonian mechanics?

"Educate yourself."