Data processing inequality

Okay kiddo, so let me tell you about data processing inequality. Imagine you have a secret message written on a piece of paper and you want to protect it from other people who might try to read it.

Now, you decide to put the paper in a locked box so that only you can access it. But then, your friend suggests that you put the locked box in another box and hide it in a secret place so it's even harder for someone to get to it.

This is kind of like data processing inequality. The locked box is like your original data, and the second box is like the processed data (the data that has been changed or analyzed in some way). The idea is that the more you process the data, the more secure it becomes because it's harder for someone to go back and figure out the original message or data.

But the funny thing is, the more times you process the data, the less information you actually have. It's kind of like playing a game of telephone. The more people that pass on the message, the more distorted it becomes.

So, while processing the data multiple times may make it harder for someone else to get the original information, it also means that the processed data has less and less useful information in it. That's data processing inequality!