This is why you can’t unlock a car door if someone is trying to open it at the same time

Jalopnik:

This is one of the most common shared experiences in all of automobilia: You’re outside a car, trying to get in. The person inside the car is attempting to open the door lock at the same time you’re pulling the handle to open the door. A comedy of errors ensues, with each of your actions canceling out the other’s, leaving you both pulling handles or locking buttons over and over, in a seemingly never-ending mechanical stalemate. Eventually, someone yells for someone to let go, already, and the nightmare ends. But why must it be this way? What’s going on?

Why can’t you pull the door handle while the door is being unlocked? Why would such a fundamental mechanism of a car have such a frustrating flaw? Well, the answer is simple mechanics. (Except, as we found out, there’s nothing simple about door latches.)

I had no idea car door locks were so insanely complicated.