 But when we find something aesthetically pleasing, when we find something moving, it's actually a teaching signal for us. It's a motivational learning signal that guides us towards where we might be able to learn something. So it helps keep us on our bleeding edge and constantly help us navigate our informational landscape. This idea of buildings challenging us reminds me of something listener Siobhan said when we were stood in front of that imposing building in her neighbourhood. We asked her if she found it interesting or dull.