We are all wired to be a stone-age human!
So we react to the risk as wired as our ancestors who run on the savannah in Africa, fleeing away from predator beasts, avoiding poisonous or harmful things like particular plants and something polluted to maximise the chance of survival.

It might be all good as long as one lives such a life alone, relying thoroughly on their instinct, or so called Gut. But we don't. Modern lives are far more complicated.

In this post I summarise, from a climber's perspective, some interesting facts taken from the brilliant book: Risk: The Science and Politics of Fear by Dan Gardner (2009).