"Max Demian" wrote in message
o.uk...
On 28/04/2017 19:03, Mr Pounder Esquire wrote:
DerbyBorn wrote:
Why do we scrub the heavy thing back and forth when it has fast
revolving brushes? Surely a single slow pass is just as effective.

Same as using a hover lawn mower and moving from side to side when just
forward does the same job.

People like doing things even if pointless.

Not convinced its like, its more habit and not thinking about why they do
it.

Like flapping Polaroid photos while they develop.