i guess i ride enough - not dozens of kms or daily, but over many years - to intuit the gear, which is helped by the gear mechanism jumping to discrete position

i guess i ride enough - not dozens of kms or daily, but over many years - to intuit the gear, which is helped by the gear mechanism jumping to discrete positions. The first bikes i rode with gears were Marins back in the 90s which had no indicators, there was an old 3-speed Sturmey Archer (had to Google this one) where the gears are within the hub, I don't recall a gear indicator for that, but perhaps there was