Logical thinking is impossible

You have gone to a supermarket to buy washing powder, but your usual brand has sold out. Remaining on the shelves in front of you is a selection of five different choices. One is quite a lot smaller than the others, while another comes in a bucket with enough powder to last you the next six months. A third one boasts elegant packaging, the fourth one is rather difficult to reach on the top shelf, and the fifth sports a label that says ‘50% off’. When you read labels and dosage guides to try to calculate the price per wash for each power, you give up, because the variables create too many options to choose between. But then your brain comes to your rescue.

The brain is likely to abandon your sense of logic, allowing itself to be guided by