This was a stupid little post on the theory behind differential pricing of clothes that I never expected anyone to read. I have no early idea why it is my most-viewed post ever.

This is a post I wrote to provide some context for Piketty's famous book, Capital. The model I discuss in the post is taken from a line of optimal tax theory research that Piketty contributed to, and I think the model helps clarify why Piketty thinks about capital and inequality the way he does (and why you should too!).

As it's title says, a short critique of "economic mobility"--they way "mobility" is typically defined, it is possible to have both rising mobility and immiseration happening at the same time to the same individuals.

To show solidarity with the HIV+ community, I tried a new in-home testing kit and blogged about the experience. I was rather disappointed with Oraquick's low sensitivity: 8 out of 96 HIV+ individuals actually tested negative in the clinical trial cited in the accompanying literature. While it would cost $10 to $20 more to get tested in a doctor's office, the higher accuracy is certainly worth it.

Ok, actually this is the post in my top ten list, but I wanted to send you to the revised version of the Taylor rule app, which has some stylistic and performance improvements over the old app.

A post making what ought to be an obvious point: the famous Chamely-Judd theorem stating that optimal capital taxes are eventually zero is actually something of a knife-edge result that ignores potential off-budget redistributionary effects of taxation.

A comparison of Obamacare to the Singapore health system, which has been lauded by many US conservatives as a better alternative to Obamacare. I show that the two systems are actually pretty similar, and Obamacare is, if anything, more conservative. This post appears to be much more popular in Singapore than in the US.

Matt Yglesias was wrong once, on the internet.

This was another stupid post I didn't expect anyone to read. Just some random thoughts on how to make an unbreakable code.

All good policy forecasts turn out to be wrong. The reason why will surprise you.