The Globe and Mail reports in its Saturday edition that Elon Musk is one of the greatest engineers of our time. Guest columnist Tom Bradley writes that he has built amazing businesses and in doing so, has shaken mature, established industries to their core. His ability to get things done is unparalleled, going from zero to producing two million cars a year, and from brainstorming with a group of rocket scientists to building the leading space transportation and satellite communications business. His two public companies, Tesla and SpaceX, have relatively short track records and don't generate enormous profits like other trillion-dollar companies such as Nvidia, Apple and Microsoft. The booster juice is the credibility, trust and in some cases, idolization, that comes from Mr. Musk's record of innovation and wealth creation. It has allowed him to open one additional factory, a narrative factory, from which flows a world of possibilities, each more thrilling than the last. His companies' prices don't move around on dividend increases or changes to earnings forecasts, but rather by investors' willingness to take risks and seek excitement. Valuation metrics don't count. The sky, or should one say, universe, is the limit.