In December, Google's DeepMind released an experimental new web browsing proxy called Mariner. In the preview demo provided by the company, Mariner seems to be running into a problem. Megha Gore, the company's product manager, had asked the agent to find her a recipe for Christmas cookies that were identical to the ones in a photo she had gried. Mariner found a recipe online and began adding ingredients to Gore's online shopping cart. Then it stopped because it didn't know...