Firstly,
It's interesting to see such a humble subject evolve into an abstract of socio-economics.
Sometimes you never know what you'll get when you ask a question !!
Secondly the picture solved my problem so ...
Lots of luck solving the problems of the world but I'm sure you'll need less luck solving mower problems if you come here.

Cheers to all

Quality is a direct experience, independent of and prior to intellectual abstractions.
R. Pirsig .