What's that weird serrated part on kitchen scissors for? (You're ignoring a brilliant tool.)

Look at your kitchen scissors.
The ones you use to chop herbs, open spice packets, or degrease chicken.
Now turn them over.
Look between the handles, where the blades meet the pin.
See that serrated edge?
It's not a defect.
It's not metal debris.
It's not just a matter of grip.
This is a secret multitool: one of the smartest, yet least used, tools in the kitchen.
And once you know what it's for?
You'll never look at kitchen scissors the same way again.
Let's unravel the mystery of this little serrated pin and learn how it can open jars, crack nuts, crush garlic, and even cut aluminum foil, all without having to use any other tools.
What's that serrated edge?