Along Coyote Creek on a far-flung San Jose, California trail, a mysterious plaque sits next to a bike path. At first glance, it appears to be entirely covered in ones and zeroes. But from a different angle, the words “Santa Clara Valley” are faintly visible, etched beneath the numbers. The reason for the plaque’s strange location is that it marks the geographical center of the Santa Clara Valley, which may be more familiar by its other moniker: Silicon Valley. The numbers, as it happens, spell out three words in binary. The…