(July 23, 2013 at 5:55 am)Consilius Wrote: My hand and the water cannot exist in the same place. They do not occupy the same space for any period of time before the water decides to move out of the way.
The boundary between your hand and water is not as delineated as you like to think.
Nevertheless, the act of water moving out of a space while your hand moves in is time dependent. So they can and do occupy the same space for a period of time.