The endowment effect and habit loops make switching much harder than teams expect. Users are not choosing between two products on a clean slate. They are being pulled toward the one they already own, know…

pretty much

your brain hates blank space, so it fills it with the nearest sample: you

In the early 1990s, Daniel Kahneman, Jack Knetsch, and Richard Thaler gave people coffee mugs and then asked what it would take to give them up.

think of it like designing a hotel room while standing in your own bedroom. everything feels obvious because you know where your socks are

annoyingly, no

asking helps, but the chapter is warning you about the gap between what feels true and what survives contact

A lot of product strategy gets built around the wrong moment. Teams compare tools in a calm demo state. Users switch in the middle of real work, with deadlines…

yep. the old behavior already has a head start is the trap door

then it shows up as betamax lost to what people already had

In 1975, Sony launched Betamax.

make the hidden assumption visible before the review starts

then test the behavior, not just whether the room nods

and if a choice only works for informed, patient, caffeinated people, treat that as a bug

that’s the series tbh

design psychology is mostly noticing the human nonsense before it ships

deal. hydrate first