chaseha

That is exactly what they've done, training you to quickly open the app to check for notifications/messages/event invites.

More recently, after running a script found on here to unfollow everyone in my feed, I've noticed that Facebook will "invent" notifications - someone's birthday, an event near me, etc - to keep the dopamine slot machine going

I think most people are looking to see average crypto price first a la coinmarketcap, not which exchange is cheapest. Perhaps have the home screen default to the Marketcap page? Also, maybe default to US country/English or guess based on location

you mentioned real estate - do you know of any books/articles that delve into behavioral economics from a homebuyer's perspective?

"... the old Hungarian saying that “good paprika burns twice”"

Excellent!!