Of course in the days before digital tuners you didn’t necessarily need to memorise the sequence of a notes in a tuning, because you tuned the instrument relatively string to string. You would use a pitch pipe, piano key or harmonica key note to tune one of the strings then tune the neighbouring strings relative to that one, largely at the fifth for guitar, seventh fret for mandolin and tenor banjo, but for fiddle without frets you needed pitch pipes for each string. Some might think that all sounds like hard work, but it meant you learnt where the main notes were on your fretboard, certainly the first half dozen frets on each string, which I get the impression many are not aware of these days.