A first startup taught the product designer what he did not want from a second. At Phantom, Chris Kalani turned that lesson into a founding team, a clearer job, and a wallet built for people who would rather not admire the machinery.

A $95,000 Banksy went up in stubborn flames. Five years later, the founder behind the spectacle is still obsessed with proving what is real - only now the fire has given way to invisible infrastructure.