[aclements18]

While I am a huge fan of Tesla, and Musk, I think your reasoning is a bit unsubstantiated. While most analysts who don't have their head in the sand would agree that Tesla is an awesome company and has years of explosive growth ahead, there has to be some numerical concept that helps you distinguish a good company from a good investment.

The key concern is all your points still apply if the stock price was $500, instead of $180. At that point would you still invest?

Another way to think of it: If I were to give you one lump sum for half of all of your future earnings (salaries, bonuses, gifts) what would a be a reasonable price that you would sell that to me for? You could be a very capable professional with a lot of earning potential but there is still an upper limit on what I should pay if I plan to come out profitable, correct?