ELI5: Explain Like I'm 5

Stick number

Okay, imagine you have a bunch of sticks. Each stick is different, some are taller, some are shorter, some are thicker, some are thinner. Now, we want to know how many sticks we have without having to count them every time.

So, we give each stick a number. The first stick gets the number 1, the second stick gets number 2, and so on. This way, we can just say "stick number 5" instead of having to count each stick to find it.

It's kind of like when we go to the doctor's office and they give us a number to wait in line. That number helps the doctor know who they'll see next without having to remember every person's name or look at their face.

So, stick number is just a way to give each stick a unique identity so we can easily find and talk about that stick without having to count them all over again.