> a computer vision + laser system that could identify and zap individual weeds rather than napalming the whole ecosystem chemically > arms that could pick onl

> a computer vision + laser system that could identify and zap individual weeds rather than napalming the whole ecosystem chemically > arms that could pick only the correct, or ripe crop, or sub-varietal of crop, on a field planted with a variety of useful plants I've seen demos for both of these in the last year or two.