Tesla is doing something we haven't seen since the early 20th century — rapidly building up a new industry. Here's how. (TSLA)

· The early 20th-century was a period of rapid innovation.
· 120 years later, innovation has given way to consolidation: the automobile, the airplane, and stuff like nuclear power and computers are valued as legacy investments.
· Tesla isn't. The company's value confuses everyone because they're trying to think of the firm...