I'm no expert, but apparently a lot of people are. The planet is erupting with experts professing to know heaps about a subject. We have marketing experts, medicinal cannabis experts, travel experts, dog experts, cheese experts, building experts…an infinite supply of specialists and savants happy to proffer their prowess for fame, fortune, or because they're drunk on the non-GMO soy milk of human kindness.

Cambridge English dictionary defines an expert as "a person with a high level of knowledge or skill relating to a particular subject or activity."

I recently got an email from someone who signs off with