What does it mean that digital environment as choice architecture?

Example: You unlock your phone to check the weather. The home screen shows Instagram, Twitter, YouTube, and a news app — all above the fold, all with red notification badges. Fourteen minutes later you're watching a video about a topic you don't care about, the weather still unchecked. You didn't choose to spend fourteen minutes on YouTube. Your home screen chose for you. The apps you place at thumb-reach are the behaviors you'll perform most often — not because you decided to, but because the environment made them the path of least resistance.

Try this: Screenshot your phone's home screen right now. For each app visible without scrolling, write down: (1) how many times you opened it yesterday, (2) whether each opening was intentional or reflexive, and (3) whether the app serves a goal you've explicitly chosen. Move every app that fails test 3 off the home screen — into a folder, a second page, or delete it entirely. Replace it with one app that supports a current goal (a language learning app, a meditation timer, your notes tool). Use this configuration for one week before evaluating.