### Essays

## Autocomplete as an interface

Why zsh is really better than bash • how I started moving twice as fast in python • what else can you autocomplete • on maximizing interface bandwidth

## Why squared error?

its computational convenience • connections to the Gaussian distribution • differentiability and basis independence • why *not* squared error • absolute-error methods

## Advice on running an effective altruism student group

have two people • donâ€™t be embarrassed • getting famous speakers • navigating bureaucracy • outside support • lessons from the philanthropy fellowship • advertising strategies

## Plants, continued fractions, and the golden ratio

Where should one grow one’s leaves? • sunlight maximization • the most irrational number • Fibonacci phyllotaxis