> I would hope by now the human eyeball is replaced by some digital light sensor It has been! But if my lab experience was any guide, it's not necessarily a go

> I would hope by now the human eyeball is replaced by some digital light sensor It has been! But if my lab experience was any guide, it's not necessarily a good light sensor. Spectrophotometry is great for getting coarse accuracy results out of. True precision... that is, and will remain, difficult.