On Thu, 17 Sep 2009 19:23:11 -0400, Tony
wrote:

Gordon Shumway wrote:

Is it good if a vacuum really sucks?

Actually a vacuum doesn't suck. The outside air pressure pushes the air
in. Really.


But in what way is that different from any other sucking? So if
sucking exists at all, doesnt' the vacuum cleaner suck?

Doesn't suck mean, "create a partial vacuum so the outside air
pressure pushes air in"?