I am not a pessimist — I am a realist

«I’m sure that Amazon in the next month will rise considerably,» said Tom to his friend Fred during the coffee break. «Why do you think so?» Skeptically asked Fred. Tom says: «in next month’s classes begin, but students and teachers need to buy books, it should increase sales, and hence the share price.» Fred retorts: «Maybe, but it might not be so easy. This is just one of many possible factors, but the price may depend on a number of other reasons that you probably missed. Disillusioned little support for his friend, Tom yells, «You’re such a pessimist.»