hydraulic lifts and their undercarriage like Ramon from the Cars movie well where hydraulics use oil and fluid dynamics to do that sweet lifting yo pneumatics use air pressure you build up a bunch of air pressure and then release it that release moves whatever you want to piston a pulley the deadly grin of a lifeless singing bear they're used in every thing from robots to build cars to the jaws of well jaws at Universal Studios now Greiner doesn't specify how powerful toon manic actuators and a chuck-e-cheese style robots mouth would be but we can go ahead and calculate a rough estimate whereas other actuators in the body and legs would have to be more powerful since they're moving larger heavier chunks of robot the ones in the mouth are smaller more delicate they only have to move a couple of ounces of plastic and metal for the jaws teeth and cheeks the pneumatic tubes themselves are also only a couple inches long meaning that they can only build up so much air pressure all things considered you're only gonna need about NUMBER_TOKEN psi of air pressure max to do all of that it's not a whole lot it's like the pressure created from a strong breeze so how the heck do a handful of small Pistons powered by air create enough force to crack a child's skull wide open um they can't you see crushing a human skull ain't easy the NUMBER_TOKEN bones of the human skull are there to protect the most important organ in our body from damage and the whole thing has got a rounded structure to help disperse any forces applied to it's the strongest boxer in the world could punch you in the head at full force and it barely cracked but this perfectly normal Chuckie Cheese wannabe not only practiced the crying child's head but breaks through hard enough to cause severe trauma to the brain and how much force is needed to do that well it's actually a tricky question first we got to ask how old is the victim when your first bore in the skull is softer moldable since you know it has to pass through narrow lady bits once it's made that journey it has to be able to accommodate for your growing brain so it has these soft spots called fontanelles to give the skull flexibility so I immediately thought that our crying child birthday boy might be a bit easier of a nut to crack considering how young he is but the research didn't pan out that way the soft spots disappear or ossify by the time that you're NUMBER_TOKEN to NUMBER_TOKEN months old and I don't care how heartless of a killer you are a purple guy you ain't lettin your one-year-old hobble his way home after a day of sitting terrified in a broom closet second to answer the question I had to ask what parts of the skull are we talking because different sections have different thicknesses and as a result different strengths according to research done by Tobias matei who studied children's bike helmets and how they protect the skull the thinnest region of the skull bone is about where your temples are low and behold that's exactly where a crying child is seeing most of the damage done when he's placed in golden fredbears mouth by the bullies he's facing outward towards us mostly facing the camera meaning that the weaker sides of his skull
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