Disambiguating the ‘Observable Universe’

I’ve seen a lot of confusion over what precisely the term ‘observable universe’ refers to. This post is an attempt to remedy that. In 1929, Edwin Hubble discovered that the universe is expanding. He observed that light emitted from distant celestial objects was redder than expected, due to the downward shift in frequency as theirContinue reading “Disambiguating the ‘Observable Universe’”

For and Against Lotteries in Elite University Admissions

People sometimes suggest replacing the admissions systems of highly selective universities with lotteries (their names often rhyme with Palcolm Sadwell). The proposal is that universities would mark a pool of students as ‘good enough’ and then students from that pool would be accepted at random. Here are some arguments for and against this idea, inspiredContinue reading “For and Against Lotteries in Elite University Admissions”

My First Trip to America: A Photo Essay

Alternate title: Cultural Learnings of America for Make Benefit Glorious Nation of Ireland. I recently visited America for the first time. I went to Washington DC for two days, then Arlington for three, then New York for five. I travelled on the day the US border opened, for which every airport I travelled through wasContinue reading “My First Trip to America: A Photo Essay”

The Very Best of Very Bad Wizards

“Very Bad Wizards is a podcast with the philosopher, my dad, and psychologist, Dave Pizarro, having an informal discussion about issues in science and ethics. Please note that the discussion contains bad words that I’m not allowed to say and, knowing my dad, some very inappropriate jokes.”  -Eliza Sommers This is the disclaimer at theContinue reading “The Very Best of Very Bad Wizards”

Response to the Comments on Open Borders

I posted a (significantly improved) version of my review of Bryan Caplan’s book Open Borders on LessWrong and the EA Forum. It was also linked to and discussed on Marginal Revolution. I got enough thoughtful responses that I thought it was worth making a comment response post. From my email From Fergus McCullough, in myContinue reading “Response to the Comments on Open Borders”