this is a great example of different perspectives.
If I am investing in businesses, in the real world, businesses have price tags on them that aren't hard to figure..they are quite logical and there aren't huge distortions in a range of a price for any given one.
HOWEVER, take these same businesses to the stock market, make it very easy to trade, liquid, and the market, with its volume of trading being driven largely by short sighted, momentum traders, who are playing greater fool, and ANY price can and does occur