"If I move one watch, put it higher, and wait a little bit... with very good clocks, and today we can... you bring it [back] down, and this [the clock that was higher] is ahead, this [the clock that remained lower] is behind. ...The clock up, has measured more time than the clock down. And it's not just a matter of clocks. Everything, ...if you are high ...a flower would blossom more, a machine would do more cycles ...more things happening up than down. Of course, the difference is small, otherwise we would have noticed it ...earlier."