Not just UI, but simplicity of operation. The closer to “it just works” a system/program is, the more palatable it is to adopt.

Sometimes it’s nice to know where you even start, then verify from there.

Asking chatgpt can be super useful to get info. I just don’t understand why people don’t try to verify what it says before just re-posting like fact.

Honestly solar panels and electric cars. I know those existed over 15 years ago, but they weren’t serious market options until like 5 or so years ago.