Lizard

Back when I worked at the hospital, I had to take MRI training and it was my favorite thing every time. It was only like 10 minutes long and went a little something like this:

Hey. The MRI is basically a really big magnet and by basically I mean it is and we literally never turn it off. It's like really big. Really really big and powerful and The Magnet is always on. We don't turn it off Ever, for any reason. We mean it bro, The Magnet is literally always on. It's crazy strong and will definitely kill you. So don't bring any metal into the MRI room, man. You will fuck up the machine (because The Magnet is always on) and then you will die (again, because The Magnet is always on). Here's some fun questions for you to test your understanding!

1) The ______ is always on.

2) The Magnet is ______ on.

3) How often is The Magnet on?

4) The Magnet is always __.

5) The Magnet is always on. T/F

6) The Magnet is usually on but we know to turn it off for you because you're a very special boy :) T/F

7) My weak fleshy body can survive the wrath of The Magnet. T/F

8) Look at this 500 lbs steel hospital bed, which The Magnet has crumpled into an origami crane. Imagine if that was you.

9) Is The Magnet ever off?

10) Sometimes we turn The Magnet off. T/F

Thank you for taking MRI training. We hope you learned that The Magnet is always on, because it is. It's on Right Now and it will be on every time you come to the MRI. Have fun and remember: The Magnet is always on!

A diagram comparing a human hand to the equivalent limb in other mammals from Henry Fairfield Osborn's The age of mammals in Europe, Asia and North America (1910).