The BBC has another head scratcher in the list. But it’s there because I can’t believe everyone on the planet hasn’t known this almost as long as they’ve been alive.

8. Why do advertisers like to use pretty women in their commercials? Because men act irrationally on seeing them, according to research by Canadian psychologists published this week. Women are unaffected by photos of handsome men.

Apparently this wasn’t as obvious as I thought it was.