I love airplane avionics, it never changes look at for example, once you learn how to use Garmin 430/430W you can easily figure out Garmin G1000, everything is standarized, colors are standarized, there are shit tons of abbreviations like DTK, ETA, HDG, CRS, but once you learn them once you will forever understand what they mean and why they are there. You can also understand why companies like Boeing with their 737MAX were so persistent to not change airframe and avionics too much to convince FAA that 737MAX is the same type as 737NG, because retraining pilot for new aircraft type is expensive for airlines. In consumer world i would love apps that work on the same principle, thats why i love Vim. Learn it once, use it forever.