GitHub's new tool uses AI to craft code. Some developers are furious

Copilot launched last week in an invite-only Technical Preview, promising to save time by responding to users' code with its own smart suggestions. Those suggestions are based on billions of lines of public code that users have publicly contributed to GitHub, using an AI system called Codex from the research company OpenAI. GitHub describes Copilot as the AI equivalent of pair programming, in which two developers work together at a single computer. The idea is that one developer can bring new ideas or spot problems that the other developer might've missed, even if it requires more person-hours to do so.