...you get that at two given points in the history of a stock, it might be a must-buy and a must-sell, right?
What OP missed was that the author is actually another website that just reposts all of their content elsewhere. The originals are here[0][1]
[0] http://amigobulls.com/articles/buy-tesla-motors-inc-tsla-sto...
[1] http://amigobulls.com/articles/tesla-motors-inc-misses-on-de...