You recently learned how to value stocks using the P/E multiples approach, constant dividend growth model, and corporate valuation model. On September 24, 2015, you tuned into CNBC financial TV channel and watch different security analysts discussing the current valuations of Amazon, Apple, Google, Facebook, Goldman Sachs, and the overall U.S., European, emerging stock markets . However, you are puzzled because these analysts could not agree on the current valuations and end-of-year price targets for the four companies and overall stock market. For example, two analysts argued that Apple and Goldman Sachs (an investment bank) are currently overvalued, while others reached the opposite conclusion. Their end-of-the-year stock price targets also varied widely. Please solve this puzzle and explain how these analysts can reach such very different conclusions on stock valuations and price targets. You can assume that all analysts are using the same three stock valuation approaches. Limit your answers to no more than 10 sentences.