I didn't vote since there are other options to where those traces of sulfur and calcium could've came from.
Plaster of Paris is used to patch dry walls, which also have similar ingredients.
I'm not a boxer, but I do punch dry walls from time to time to see if I can break it. I could just imagine what a boxer do on their spare time.
Also, traces of sulfur and calcium might equal plaster of paris, but plaster of paris does not equal plaster or cast. The mixture has to be molded to retain its solid form, otherwise it just dries back up to powder.
I can have traces of copper and zinc in my fist, but that doesn't mean I have brass knuckles.
Plaster of Paris is used to patch dry walls, which also have similar ingredients.
I'm not a boxer, but I do punch dry walls from time to time to see if I can break it. I could just imagine what a boxer do on their spare time.
Also, traces of sulfur and calcium might equal plaster of paris, but plaster of paris does not equal plaster or cast. The mixture has to be molded to retain its solid form, otherwise it just dries back up to powder.
I can have traces of copper and zinc in my fist, but that doesn't mean I have brass knuckles.
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