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Electrical/embedded guy here. My similar law is "if you can blink an led, you can do anything".

My take has always been: If you can't blink an LED, you can't do anything.

My first priority is to get an LED blinking, and keep it blinking. Every other feature is less important.

I blinked an LED in my cell but I'm still behind bars. Guess these dumb adages don't really hold a candle to reality.

An LED on what? If you were McGuyver you'd have converted that into a laser, or used some sort of welding tool to melt through the bars!

If you can blink an LED, you have DC current and can electrochemically dissolve those bars.