# TL;DR

### Work Ethic Quote

I don’t really buy into the idea of the Protestant Work Ethic (nobody works harder than Japanese salarymen, and they’re pretty far removed from any Calvinist cultural heritage)

– J. D. Moyer

### Happy Birthday, calibre

calibre turned 10 years old 5 days ago.

### $$(I-A)^{-1}$$ trick

The geometric series $$\sum_{k=0}^{\infty}{ar^k}$$ equals $$\frac{a}{1-r}$$ if and only if $$|r| < 1$$.

### Zombies

I find zombies interesting on an intellectual level. The slow, mindless one that have to bite you. (Read The Zombie Survival Guide for more info.)

### My (Odd) Reason for Liking the Solarized Dark Background

I think of math the same way I think of this shade of blue:

### GoodNotes Templates

These are Blank and Cornell templates, in both Landscape and Portrait. They’re meant for any Retina iPad, including both iPad Pro sizes.

### Easy Way To Remember Some Grammar (If You Have Some Math Background)

It’s annoying to remember the grammar rule for quantities that dictates when to use many vs. much, fewer vs. less, etc.

### Funny quote from the inventor of sendmail

Some context: Eric Allman invented sendmail and is openly gay.

### When String Becomes Dangerous

Try this command:

## Problem

### The Most Original Idea I Know

Jack Sparrow said it best.