Why Is Calling a Market Top So Hard?

Figuring out when a market has hit bottom is easy compared with knowing when it hits a top.
You would think it would be easy to know when you're at the top.

Each morning, I go through a similar routine: I wake up (no alarm clock), go to the kitchen to get a cup of coffee (this is my machineof choice lately), launch a script that opens 40 or so Firefox tabs. As part of my morning research, I quickly scan this series of websites to see what happened overnight, and what might be interesting.

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