Meta has crossed a threshold that many in the technology world have long anticipated: its new AI agent does not merely speak, but acts — logging into external applications, sending communications, and moving money on behalf of users. This marks a quiet but consequential shift in the human relationship with software, as the intermediary between intention and execution is no longer a person but a system. The promise of frictionless digital life arrives alongside questions that civilization has always asked of its most powerful tools: who is responsible when they err, and who decides the limits o