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The Halting Problem!
Need a quick buck? A while ago someone offered $1000 for a developer to “create a debugger program. This program will take as input the source code of another program, and will analyze that other program and determine if it will run to completion, or have an error, or go into an infinite loop.”
What do you think — would you take the contract?
One-time pads 🕵️♀️
Your field operative Alice sends you a top-secret message:
hqsoew. Many past spies have been executed after their messages were deciphered. But this time, you and Alice are using a one-time pad — the simplest and most secure cipher that exists!
In this tutorial, you’ll learn how to decipher Alice’s message, and save Alice and your country along the way.
The quadratic formula: a tutorial
So you need to solve . You remember the word ‘quadratic’ and something like … or was it ? 😨
Stop trying to memorize the quadratic formula! In this interactive tutorial, you’ll rediscover the quadratic formula with me, and you’ll never have to memorize it again! 💪