The next evolution of personal computing won’t replace your phone — it will free computing from any single device. Like most technologists of a certain age, many of my expectations for the future of computing were set by Star Trek production designers. It’s quite easy to connect many of the devices we have today to props designed 30-50 years ago: The citizens of the Federation had communicators before we had cellphones, tricorders before we had smartphones, PADDs before we had tablets, ...