Facebook’s shares open for trading today. Chances are, you’re holding your breath or rolling your eyes. Whether you’re inspired or baffled about the company’s valuation and prospects, the occasion is hard to ignore. What we are witnessing, and participating in, is more than an IPO. It’s a collective rite. The event will sanction Mark Zuckerberg’s place in the pantheon of innovative entrepreneurs who built fortunes upon technologies that changed the world, or more precisely, that changed the way people experienced and lived in the world.