I can attest that without a scribbled note or two you can waste a lot of time.
During the recording of my last album we did several takes on a few songs....then left them for a few days. Had to listen sooooo closely the next time in the studio to see which take we wanted to use. Had I (or the engineer) made a note originally for each take ie: 1st take too fast, 2nd take, flat note in chorus....etc. at least a couple of (expensive ) hours would have been saved.