Smudge factor is a really important point. I think that should be measured in seconds. Maybe call it "smudge time" or "drying time"? Test it at different interv

Smudge factor is a really important point. I think that should be measured in seconds. Maybe call it "smudge time" or "drying time"? Test it at different intervals until it doesn't smudge: 20lb paper, a 1 cm straight line and a kleenex for smudging.