Sunscreen. When? Why? Why not?
Hello, I've been wondering about sunscreen's effectiveness in reducing cancer risk. The general impression I've gotten in my (admittedly brief) research on it seems: "If you know you'll be exposed for a long duration in the summer/spring, then yes, wear sunscreen. Otherwise, Vitamin D generation takes priority." (related) I've looked...
If you were dead in the future, you would be dead already. Because time travel is not ruled out in principle.
Danger is a fact about fact density and your degree of certainty. Stop saying things with the full confidence of being afraid. And start simply counting the evidence.
Go back a few years. Start there.