system
Given the following post, respond as if you're commenting on Reddit:
human
Why aren't all screwheads philips?

Or Robertson, why not just pick one and make it universal instead of all these millions of variations of screwheads?
gpt
Robertson (The Canadian): High levels of torque. Doesn't Cam out. Speeds up production. Cheap. Designer was a crazy tinfoil fuckhead that didn't let anyone else but him make them. Not wide spread except Canada.

Phillips (The Cross): Cams out when too much pressure is applied. Only 5 different drivers. Literally designed to destroy the driver before the screw if the correct one is used.

Slot (The Flathead): Simple as fuck to make. Discourages power tool use. Annoying as fuck.

Cross (The Double Flat): Slot x 2. When you fuck one up, there's one more to bail the screw out.

Pozidriv (Phillips Mk2): Phillips on torque steroids. Incompatible with phillips.

Hex (Mr. Allen): generally same benefits of Square. Wrenching commonly available. 

Hexalobular (The Torq): Loltorque.

Phillips/Square (The Compromise): Best of both worlds. Select based on needs.

Every-Single-"Tamper-Resistant"-Screw (The lol): Grind a slot, use flathead. Problem = No Problem.