This is very much like my panoptic computronium cathedral™. I only need $80B to build it to achieve AGI. The AGI requires 24/7 surveillance for making optimal decisions because it needs access to as much information as possible. The second stage will require worshipers to ingest nanosensors so that even their bowel movements can be tracked and analyzed by the AGI. This is all for the benefit of those who are under constant surveillance in the cathedral.