## Cost/benefit analysis of martial arts training and self defense

I was thinking about my history of training martial arts and how it’s worth/benefit would be analyzed from a purely dispassionate/rationalist perspective. Many (possibly majority) of people start learning martial arts for self defense: i.e. to (hopefully) learn how to … Continue reading

## How High Can a Bullet Go?

There was a question posted on the physics subreddit asking how high in the air a bullet would go if you shot it straight up. It was later removed by the moderators (who knows why?), but I thought it was … Continue reading

## Kensei: a pulpy Japanophobic 80’s technothriller

So yesterday I was doing some housecleaning and getting rid of a bunch of old books that had been stashed in my home office bookcases: novels I’ll never read again, kid’s books that my children have outgrown, etc. I ran … Continue reading

## Black Hole and Earth

In the spirit of what if at xkcd, I saw the following question posted on a thread in reddit/r/space: What would happen if a black hole the size of a grain of sand existed on Earth? The thread was deleted … Continue reading

## Sci-Fi RPGs and Rendering Planets

My bi-weekly RPG group has, like most now, had to move online to keep playing. Though to many playing pen-and-paper RPGs online has become the norm, we’re a bit older and more traditional so it was a first for all … Continue reading

## Imaginary Dice in Your Head – Taking it to the Extreme

Today I saw this post on boingboing with a method to generate a random number from 1 to 6 without the need of a die. The basic method is this: Pick a random word, using any method you like. Sum … Continue reading

## Science Fiction and Fantasy Recommendations: Brandon Sanderson

Where to start with Brandon Sanderson? He is by far my favorite fantasy author today. If I had to sum up his style in one sentence, it would be “Fascinating and intricate magic systems, amazing action sequences, and flawed characters … Continue reading

## Science Fiction and Fantasy Recommendations, pt. 3: Hannu Rajaniemi

Hannu Rajaniemi He’s a fairly new author, and he’s the only Finnish author that I can think of in science fiction right now. He’s best known for his trilogy that begins with Quantum Thief. It’s a little hard to explain … Continue reading