The Irrational Truths Behind User Behavior, with Dan Ariely & Gigi Levy-Weiss

I try to encourage my team to be wrong at least 50% of the time. If you're right too often, it means you haven't tried things that are sufficiently interesting.

I think there are a lot of areas where startups benefit a lot from overconfidence ... Being overconfident about your own intuitions about human behavior, I think, is very unhealthy.

I think that information does three things: It's about accuracy, it's about helping people understand the relationship between cause and effect, and it's about motivation. And it turns out, you can't always have all three of them.

There's this belief [with startups]: Get out early and iterate ... People do get out early, but they don't iterate until it's too late.

Nobody would ever do a startup in biology without having a biologist, but people have no problem doing a startup on behavioral change without somebody who knows anything about behavioral change.

The obesity epidemic, in general, it's a 200 calorie a day game. If you can cut 200 calories a day systematically, basically people lose a pound every two weeks.

I think a second big mistake is that people don't work enough on their users' mental model of their product.

I think good leaders are able to separate core assumptions of the product, and figure out what to test and what to make assumptions about.