The selection is already biased. High ELO ranked chessplayers are not all that stable to begin with.

Norway is left out because we call it syphilis.

But from now on I will start referring to it as “Danskepesten” (Danish plague)

Edit: autocorrect had changed the made-up word

Not me but years ago the inorganic lab at my uni was tasked with measuring heavy metals in whale fat and did what they normally did back then to disolve test materials. Mix nitric acid and hydrocloric acid in some heavy duty pure quartz reagent tubes, put in sample and microwave.

Well. Turns out mixing triglyceride (fat) with nitric acid and HCl as a catalyst makes nitroglycerine. And what does that do in a confined space and microwaved

It turns expensive heavy duty quartz tubes into expensive quartz dust and a fucked microwave.

HF is a weak acid but extremely complex binding. If you spill it on skin, it will react with any Ca in your body and FUCK.YOU.UP! Always have plenty of water with Ca to rinse with and Ca containing “lotion” https://en.wikipedia.org/wiki/Hydrofluoric_acid_burn?wprov=sfla1

It is also fun as you can get really interesting results. I wanted to make a coffee cup with no bottom and put some in a cup and placed the cup in Ca-water. What happened was it removed the glazing and made a cup with slight leak as liquid permiates the clay.