Michael Niedermayer used to fly drones for the U.S. Army and the Central Intelligence Agency, gathering real-time, life-and-death intelligence on battlefields in Iraq. Now he pilots delivery robots for a San Francisco Bay Area startup that wants to disrupt burrito delivery. Postmates, which in mid-August received a permit to operate its Serve delivery robot in San Francisco and is already testing it for food delivery in Los Angeles, employs a growing team of "pilots" to remotely oversee, and at times steer, these four-wheeled food ferries. "We will probably see a drastic increase in our workforce over the next five years," says Postmates Chief Executive Bastian Lehmann. Across industries, engineers are building atop work done a generation ago by designers of military drones.

Until recently, Robyn Ewing was a writer in Hollywood, developing TV scripts and pitching pilots to film studios. Now she's applying her creative talents toward building the personality of a different type of character -- a virtual assistant, animated by artifical intelligence, that interacts with sick patients. Ewing works with engineers on the software program, called Sophie, which can be downloaded to a smartphone. The virtual nurse gently reminds users to check their medication, asks them how they are feeling or if they are in pain, and then sends the data to a real doctor. As tech behemoths and a wave of start-ups double down on virtual assistants that can chat with human beings, writing for AI is becoming a hot job in Silicon Valley.

Silicon Valley is seeking poets, writers, comedians, and other artistic people to help humanize the personalities of artificial intelligence tools. Demand for chatting virtual assistants and other artificial intelligence (AI) products is creating favorable job prospects for writers, poets, comedians, and other people of artistic persuasion in Silicon Valley. The industry is tapping them to engineer the personalities of AI tools to make them capable of seamless interaction with people. AI writers are tasked with imbuing the AIs with natural-seeming conversational capabilities. Writers for virtual assistants must typically concoct a backstory for these assistants, and inject personality quirks into even the most mundane operations.

Until recently, Robyn Ewing was a writer in Hollywood, developing TV scripts and pitching pilots to film studios. Now she's applying her creative talents toward building the personality of a different type of character -- a virtual assistant, animated by artifical intelligence, that interacts with sick patients. Ewing works with engineers on the software program, called Sophie, which can be downloaded to a smartphone. The virtual nurse gently reminds users to check their medication, asks them how they are feeling or if they are in pain, and then sends the data to a real doctor. As tech behemoths and a wave of start-ups double down on virtual assistants that can chat with human beings, writing for AI is becoming a hot job in Silicon Valley.