Clearly a Mario-style "cha-ching" sound would be really annoying, but Excel's cursor is animated, Sheets slides tabs around when you reorder the sheet tabs at t

Clearly a Mario-style "cha-ching" sound would be really annoying, but Excel's cursor is animated, Sheets slides tabs around when you reorder the sheet tabs at the bottom, there are all sorts of hover states and previews, the ctrl-f highlight has a little bounce to it, etc. I think you could even look at syntax highlighting, matching-paren-highlighting, and intellisense/autocomplete as a sort of juice - they're affordances that indicate that what you're doing is "good", and the app is "understanding you". Even more than a spectrum (where "pro apps" need "less juice"), it seems like there's just different juice for different apps. For example, it seems like some kind of better-designed juice could have saved Citibank a lot of money: https://arstechnica.com/tech-policy/2021/02/citibank-just-got-a-500-million-lesson-in-the-importance-of-ui-design/ https://arstechnica.com/tech-policy/2021/02/citibank-just-go...