1) Are you sure you googled "Sidelights", and not headlights or spotlights. I just did it again, and a thousand references to the book came up.

2) I didn't say GR contradicts SR.

3) I don't know what Einstein "intended to say", I just know what he ORIGINALLY wrote. Check it out yourself.

4) You just said it yourself... it's an "observed fact". OBSERVED.