Do you ever have this problem too?

Do you ever go to the bottle shop when your car is running low on petrol? Seems like these two scientists do have this problem. Poor scientists.

Two economists have found it increasingly hard to distinguish oil from wine – a fascinating study on how price signals can confuse even the experts.

Lets hope, for their own health's sake, that they roll the petrol in their glass and smell the strong aromas before they actually drink it.