I discovered, today, a letter by the Lubavitcher Rebbe in which he claims that the sun revolves around the Earth:

One of the conclusions of the theory of relativity is that when there are two systems, or planets, in motion relative to each other—such as the sun and earth in our case—either view, namely, the sun rotating around the earth, or the earth rotating around the sun, has equal validity. Thus, if there are phenomena that cannot be adequately explained on the basis of one of these views, such difficulties have their counterpart also if the opposite view is accepted.

Secondly, the scientific conclusion that both views have equal validity is the result not of any inadequacy of available scientific data, or of technological development (measuring instruments, etc.), in which case it could be expected that further scientific and technological advancement might clear up the matter eventually and decide in favor of one or the other view. On the contrary, the conclusion of contemporary science is that regardless of any future scientific advancement, the question as to which is our planetary center, the sun or the earth, must forever remain unresolved, since both views will always have the same scientific validity, as stated.

Does anyone understand what this is trying to argue? I suspect he's saying something analogous to, you know, the universe shifting around the Earth in sync with the sun, which technically makes the sun revolve around the Earth (in a semantical sense). But I'm not confident of that.