Just in case you don't see where Phaedrus came up with that solution, I'll enplane a little more. A river is always running. If it wasn't it wouldn't be a river, it would be... the finger lakes, or something like that. Because it is always running, the old water goes out, and new water goes in. Because the river IS the water and the water you stepped in before is no longer there, you really are stepping into a new river every time, because the river has changed.
Basically, I agree with Phaedrus.
_________________ My name is supposed to say Ayreon, with the E before the O. This is the name of my favorite band. The name Ayroen is just a typo.