lovely! but I like to think that "Low hanging fruit" really depends on how tall our ladders are. And our ladders are much taller than they were in 1788,(reply>), that's a really lovely way of looking at it!,(reply>), Who needs ladders? Soon enough we'll have jetpacks.,(reply>), @Jim Baker That reminds me that we can now see platypuses have bioluminesence too... Honestly there's just so much we don't don't know, even though we know a lot! There are known unknowns, but the unknown unknowns make it difficult for us to grasp exactly how much we are missing.,(reply>), Sure.  For instance, UV cameras helped scientists see bird plumage in (forgive me) a different light, well within my lifetime.