🧩 Why One-Hot Encoding Exists

Machine learning models don't understand words.
They understand numbers.

So how do you feed a value like:

Color = Red

You can't simply write:

Red = 1
Blue = 2
Green = 3

The model might think Green > Blue > Red, even though colors have no natural order.

Instead, we create separate columns:

Red    1 0 0
Blue   0 1 0
Green  0 0 1

This is called One-Hot Encoding. It represents categories without introducing fake relationships.