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Programming is a Dark Art, and it will always be. The programmer is fighting against the two most destructive forces in the universe: entropy and human stupidity. They're not things you can always overcome with a "methodology" or on a schedule.

--Damian Conway

--Damian Conway

\begin{bmatrix} 1 & 0 & \ldots & 0 \\
0 & 1 & 0 & \vdots \\
\vdots & 0 & \ddots & 0\\
0 & \ldots & 0 & 1_{n}
\end{bmatrix}