From: Ste on
On 19 Jan, 01:57, jdawe <mrjd...(a)gmail.com> wrote:
>
> naturally you have 2 opposing directions forward or reverse. So
> reverse pull force may look like a push to some observers.

It is more than that. It's actually *impossible* to discern whether
there is pushing or pulling. The distinction relies on there being an
agent responsible, but in nature as I say there is really only
'imbalance', and a vacuum no more sucks than a high-pressure gas
blows. It is simply an imbalance of pressures - attempting to
attribute 'responsibility' to either the high-pressure gas or the
vacuum (i.e. attempting to discern whether the vacuum is pulling or
the gas pushing) is ultimately fruitless, because one does not exist
without the other, and in fact pushing and pulling are one and the
same thing.