Conditional Risk
Permanent link to this comic: http://xkcd.com/795/
Image URL (for hotlinking/embedding): http://imgs.xkcd.com/comics/conditional_risk.png
[[Lightning strikes the ground, illuminating trees with a bright white light. Two people are standing near it. One has a walking stick.]]
<<CRACK>>
<<BOOM>>
First person: Whoa! We should get inside!
Second person: It's okay! Lightning only kills about 45 Americans a year, so the chances of dying are only one in 7,000,000. Let's go on!
The annual death rate among people who know that statistic is one in six.
{{Title text: 'Dude, wait -- I'm not American! So my risk is basically zero!'}}