What they are doing is taking something that otherwise creates pollution and turning it into something useful.

The reality is that zero defects in products plus zero pollution plus zero risk on the job is equivalent to maximum growth of government plus zero economic growth plus runaway inflation

In computing, turning the obvious into the useful is a living definition of the word 'frustration'.

Desire creates its own object.

The idea of taking what's useful and discarding the rest is something I say to myself almost on a daily basis.

Leisure is the time for doing something useful. This leisure the diligent person will obtain the lazy one never.