The more conservative process industries with their longer plant life cycles have been slower to adopt and analogue-based measurement and control still dominates.
2.
This may correspond to a percentage if products and consumables are quantified in compatible units, and if consumables are transformed into products via a conservative process.
3.
Galbreath and other environmentalists have argued for a much more conservative process in tree thinning and allowing smaller-diameter trees to provide a canopy for plant and wildlife species that huge " old growth " trees provided decades ago.