A review of Rory Sutherland’s new book ‘Alchemy’ .
Why we rate some experiences more highly if effort is involved.
Why we make our biggest decisions when our age ends with the number nine.
Would you believe Ed Sheeran would play a private gig for only $2?
How putting yourself in your competition's shoes can spark powerful ideas.
How structural colour in the animal kingdom offers clues to a paint-free future.
The quicker we process or recall information, the more we believe it.