Slide Rules

One of the things that Winnie Winston suggests is trying to play with your eyes shut.
I’ve started doing that and it’s brilliant.

Very frustrating to begin with, not least for my neighbours, but pays dividends.

In my opinion it cuts out the middle man:

why, when you want to make a note change by an audible amount, translate that into a distance, as visible on a fretboard, and then try and then try to effect the change using your eyes?

Surely it makes more sense just to do this by ear.
Just by practising this you get a better feel for how far your hand need to travel to change pitch.
you also get in the habit of moving to slightlty flat of your destination note and then gradually rising to it by ear.