And if we look at the planets of our solar system, lo and
behold, every single one of them is travelling at exactly
the right velocity to keep it in its stable orbit around the
Sun. A blessed miracle of provident design? No, just
another natural "sieve". Obviously all the planets that we
see orbiting the Sun must be travelling at exactly the right
speed to keep them in their orbits, or we wouldn't see them
there because they wouldn?t be there!