My kid got thrown into one of these contraptions when he was little; it was one of the most tragic events I had to witness as he squealed while encased in clear plastic unable to move. I had to hold my wife back from rushing to save him.
He also got a nasty cut in his earlobe when he was like 3 and they had to wrap him up in a blanket like a burrito to put in the stitches, while he squealed.
There’s an image going around that purports to explain the origin of the arabic numerals. It’s cute. It claims to show why the numerals that we use look the way that they do. Here it is…