I tracked every word that Ruby learned to say in the first 2.5 years of life, analyzing vocab compared to her brothers.

In which I ignore how many copies of The Motivation Hacker I sold for six years, then "just" ask the AI.

In which I have a magical Christmas shopping experience with the AI

Photos from the first few weeks of baby Ruby's life

I tracked every word that Clark learned to say in the first 2.5 years of life, graphing it and comparing it to Max's.

I always love it when people share revenue data for their apps / games / books / works, and it's been two years sinc...

Reader Raj Bapna has formatted The Motivation Hacker into a paperback, so you can now get one and do your normal boo...

I always love it when people share revenue data for their apps / games / books / works, and it's been a year since T...

It's been almost six months since I published The Motivation Hacker, my book on how to get yourself to want to do wh...

My head obsesses. I get songs stuck in my head so badly that I have to leave the room when "I'm On A Boat" comes on,...

A month before Y Combinator Demo Day, I resolved to be as productive as possible for 30 days, since they say that th...

Here are the last six posts I've written for the CodeCombat blog over the past few months. Look at the view counts:T...

Originally posted on the CodeCombat blog.What a crazy weekend! We launched our beta on Friday morning by posting to ...

Here are some of the posts I want to write: experiential sampling tools, the butter eating competition story, experi...

ManiacsInspired by my 120-Hour Workweek Epic Coding Time-lapse video, Bethany and Danny over at Beeminder have done ...

There's a thought experiment people use when they think about possible future technologies like teleportation and cr...

This is the 2nd time I've seen this kid, both times with a burrito, and NO shoes. It's in SOMA, and he has a fancy b...

During the hike up King's Peak (wild bachelor party, I know), I was a lithe gecko gliding up the trail. When going d...

I used to eat food. I still do, but I used to, too.You have probably heard of Soylent, the liquid meal replacement w...

When I was a kid, I didn't work. I got a tiny allowance ($5 per week, or maybe per month), and every now and then I'...

It's that time again where I become a better person. Help me out, would ya? Follow this link to give me anonymous ad...

Here's an old post from 2011-11-21 I thought I'd save from Google+. It is just two years old and already my G+ histo...

After a reader asked about why I don't use shower products on the cold showers post comments, I started thinking of ...

A few months ago, I set out to test cold showers. Here's what I wrote for my experimental mission statement:People a...

Watch out: I use "I" 54 times in this post, so this will be boring if you, like me, aren't interested in hearing me ...

These are the three plants I have out of my 99 things. I went to a plant nursery and bought them after my friend Dav...

I was talking to a friend who seemed to be independently rediscovering what he called self-referential motivation: m...

04:06. The wake light has gradually brightened to 20% brightness, but I cut it off early. It's time to rise, silentl...

I wrote this as a guest post on the Beeminder blog — comments can live there.It’s dark. Warm. Safe. You’re in bed, a...

For a few months in the beginning of 2012, the only exercise I got was doing 10-20 sets of pull-ups a day. I was hac...

I was thinking of 1) setting something up where I could monitor my breath rate while working at my computer and 2) u...

I just got back from a business trip to China, where I visited Beijing, Shenzhen, and Guangzhou. I listened to and s...

Humans are naturally bad at predictions. Being bad at predictions, and figuring out how to make better ones, sounds ...

Here's another concept from language learning pedagogy (see also Extensive vs. Intensive Learning): the difference b...

In language learning, there's a slightly obscure but useful concept of "extensive reading" vs. "intensive reading". ...

I use a site called PredictionBook to make predictions, say how likely I think they are to occur, and then later jud...

Yesterday, I went down to the Institute for the Future for a workshop on "extreme learning". There were many diverse...

When Chloe and I were trying to come up with baby names, every conversation would go something like this:Chloe: "New...

Emacs wizards will tell you that it is not merely a text editor, but an operating system; not just a way to work, bu...

Last week I set out to see how many hours of programming work I could do in one week on CodeCombat, our multiplayer ...

Starting Monday morning at 04:00, and ending the next Monday at 03:59, I'm going to see how many hours of CodeCombat...

A while ago I was working with Yoni on Telepath, a project to make your laptop do passive machine learning on your e...

Now I have two kids. So far, it's pretty similar to just having one kid. The time and energy needed to sustain doubl...

I always love it when people share revenue data for their apps / games / books / works, and it's been four years sin...

Max's vocabulary started exploding around 15-17 months old. I started writing down everything he could say (with und...

Max recently turned two, so I made another video! See also the video I made for his first year....

Since Max turned one last week, I made a poignant video of poignancy showing him growing up over the past year....

Baby Max is four months old today. I posted when he was one month, talking about what a difficult little demon he wa...

We have reproduced! Max is one month old now. Here's his birth announcement photo, where he looks adorable:Apart fro...

Chloe and I dated for six years. For three years*, we were long-distance. For five years, starting five months in, I...