AI chat bots can bring you back from the dead, sorta

The idea of chatbots based on dead people raises several ethical questions surrounding privacy. People only share so much on social media, so algorithms relying on that would be flawed. Humans are also highly complex and influenced by experiences that aren't always shared via text messages. Microsoft's patent suggests that the company could use crowdsourced data to fill in any gaps. In other words, the resulting chatbot could end up saying things the person never said.