You’ve likely experienced a situation in which a thing that you have just learned or has taken your interest appears everywhere. This experience is a frequency illusion often referred to as the Baader-Meinhof phenomenon. Your brain is now applying updated selective attention when navigating life and receiving masses to sensory input. Compounding the illusion is confirmation bias, resulting in ignoring any times or situations where the thing of interest does not arise. For example, you buy a Vauxhall Astra. Suddenly, everyone seems to have the same car! Your friend’s Mum, your colleague, the guy from the gym with whom you occasionally talk. It’s all over the place! Your brain is filtering out all of the other cars and car owners around you. You’re sure it must be more popular now, but in reality, you likely weren’t noticing it before.