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When I hear jerk my first thought is always as the second derivative of velocity, because I had a TA in college who was specifically studying jerk as it relates to autonomous driving -- back in the 90s!

So he taught us how to calculate it and its importance, because it turns out the car can handle a lot more jerk than the humans inside!

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Apparently the trick for roller coasters is to keep the passengers hearts in the same plane so they don't perceive the ride as jerky.

Unless you are in Poland; then you need to keep the Poles in the right-hand plane or it will be unstable.

I thought the Poles needed to be either all on the left-hand plane, or within the unit disk, for stability? (I haven't had my coffee yet, so maybe I'm remembering wrong).

Either way, I loved the joke. Thank you!

You are right, I wrote that before having my coffee...

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