This article was originally published at the defunct Skepticblog.org on Sep 6, 2011. An archived version is available here.

Llamas! I mean, sheep. I used to know a lot about these critters, back in the 1990s when I took this picture.
But for my family and I, there was a major silver lining: the 144th Saanich Fair! Western Canada’s longest running agricultural fair, the Saanich Fair has been a tradition in my family since—well, since about the 110th Saanich Fair. There’s a special kind of life satisfaction that can only arise when you gaze in wonder upon prize pumpkins and blue ribbon pies. It casts a powerful nostalgic spell. The scents of hay, dust, and manure. The cooing rows of fancy pigeons, each more Darwinian than the last. Teams of draft horses. Supporting the Lions Club through the delicious means of volunteer-sold midway hotdogs. Hearing the screams of teenagers spun, flipped, shaken, and dangled upside down for no good reason. It’s all so familiar and magical—the pleasure of being transported back to childhood (especially now that I have a child of my own to share it with).
But that sense of time travel is an illusion. Which brings me to my topic for today: the fading of expertise. Read more