Your parents knew what they were talking about when they warned you about claw machines:  "Don't waste your money, that damn thing is rigged!" (OK, I'm channeling my dad, and I actually cleaned it up a little.)

The key words here are "claw strength." According to the video below, researchers at studied the instruction manuals for various claw machines, and found that there are settings to determine how often to give the claw strength, based on a formula which calculates the cost of the game, the value of the prizes inside, and the desired level of profit.

You thought you had skills. The video below will crush that idea. And it sucks, because it's just one more thing my dad was right about.