In the dream economy, Musk is a technological visionary in the way that Nelson Mandela was a moral visionary in the 1990s. Musk’s status as one of the world’s richest people suggests we — or at least the markets — are prepared to place our money where Musk’s mouth is. Adding to the economic heft of his vision is the fact that even NASA is looking to him to lead the way. Since the company has indeed chalked up genuine successes, why shouldn’t we believe that Musk’s dreams about Mars will come true?