in 'diamond age', neal stephenson describes a future where nanotech devices are a constant threat, and cities are surrounded by grids of devices that scan for i

in 'diamond age', neal stephenson describes a future where nanotech devices are a constant threat, and cities are surrounded by grids of devices that scan for incoming threats and destroy them. also there's a cult centered around a subconsciousness born in a group sex ritual. so yeah, good book.