Says mrjesse: Yeah but as soon as we pull out any tools to measure any of those things you'll say "Stop! That won't work because you just introduced a third body!" So ECO's point stands I say - the statement is not falsifiable. Really it's not even honest, since all you're really saying is that "Without any way to measure which is spinning and which is orbiting, you can't measure which is spinning and which is orbiting." But to say that there is no difference just because one can't measure the difference is dishonest - especially when the reason that we can't measure is because your definition bars us from using any tools which allow us to measure, when in reality such tools do exist!Said LeGrande: It is easy, show how the earth is not one AU away from the sun or that the earths rotational speed is different. Or demonstrate that the speed of light is instantaneous or simply a different speed, etc. etc. In short, measure it : )Said LeGrande: The Sun is only 2.1 degrees behind strictly in relationship to an observer on the earth, in a two body model.Said Ethan Clive Osgoode: How would you falsify this hypothesis?
There is no difference between the Earth spinning in place or the sun orbiting the earth, the suns apparent position vs actual position is the same.is dead an buried. But he may retroactively dis-allow them in posts to come. We should inquire for an official list of what is allowed and what is not allowed.
Really it's not even honest, since all you're really saying is that "Without any way to measure which is spinning and which is orbiting, you can't measure which is spinning and which is orbiting."
He's going to have to dis-allow the Earth's atmosphere and moving objects on Earth: Coriolis Effect, Eotvos Effect. But if the atmosphere is not allowed, it would make it much easier to notice the Sun's movements against daytime stars, and the space-suit clad observer can immediately see if the Sun is zipping along at 11,000 km/s or not. LeGrande seemed reluctant to dis-allow the rest of the universe (possibly because his thought experiments are getting too ridiculous even for him to bear) so he would have to dis-allow the observer. Or at least, stipulate an extra clause that the observer who is observing the Sun is blind.