For some reason these drop into an email account I keep for getting rubbish. These are the guys who have the tendency to do odd things such as measure the current P/E of the S&P500 in turnips and then try and make some prognostication about the number of turnips now versus 16,000 years ago.
I am always wary of such charts for two reasons.
1, It smacks a little of prediction.
2. The starting and ending points for historical market moves are always arbitrary