While falling, we perform the experiment of letting go an apple held in the hand. The apple is now free, but it can not fall any more than it was falling already; consequently it remains poised in contact with our hand. In our new outlook--in our new frame of space and time--an apple does not drop. There is no mysterious force accelerating it. And remember that this new frame of space and time is the natural frame of a free observer; whereas the old frame, in which the mysterious accelerating force occurred, was the frame of a very much disturbed observer. It is true that when we look down at the earth we see tress and houses rushing up to meet us; but there is no mystery about that. There is an obvious cause for it: plainly they are propelled upwards from below by that molecular bombardment I mentioned. You see that the apple's viewpoint is simpler than Newton's. Newton had to invent a mysterious force dragging the apple down: the apple observes only a familiar