On venting anger, willpower depletion, and the 10,000 steps rule. Also I take cold showers. Eight people, none of them surprised enough.

Good news: money can buy happiness. Bad news: not for you. The gang score it big with 20 bucks.

Personality tests work because you remember the parts that fit and forget the parts that don't; federal crimes.

On defeating a knight with a week of prep, creating one big time zone, and fixing sleep as a biological bug.

Good intentions barely predict long-term decisions, and a brief scientific dispute about fish.

Short-term regrets are mostly about things you did. Conversely, long-term regrets are almost always about things you didn't. Either way the gang stands by every decision they have ever made.

On credible life advice, cookie dough, and whether "what doesn't kill you makes you stronger" accounts for maimings

An epidemiologist who ran out of smallpox vaccines mid-outbreak and putting Nuclear Power Plants on the border with Belgium.

A special bonus episode where the questions were crowd-sourced & the crowd was sourced too, and we meet the Blimp guy for the first time. Kardashev scale gets mentioned and then immediately dismissed.

We ask which problems our guests would dedicate a career to. Also covered: grand unified field theory, Toyota's shady manufacturing practices, and whether the Forbes 30 Under 30 is still realistic at this point.