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Thank you for the explanation. As I understand it, correlation is not sufficient to prove causation. "Null hypothesis" is one statistical tool, an abstraction over our understandin…

Correct me if I'm wrong but you can state the null hypothesis arbitrarily: "Breathing does nothing" / "Not breathing does nothing." "Aerobic exercise does not increase the probabil…

I am sorry but you have no idea. Yours is a very common misconception. https://en.wikipedia.org/wiki/Water_Resistant_mark#Water_res... Water Resistant 3 atm or 30 m: Suitable for e…