Imagine a machine the size of a city block, its merest subsystems more complex than any warp drive or gellar field generator by an order of magnitude, capable of interfacing reality with the pure energy of the immaterial. Imagine wires that can conduct souls, processors that can regulate the flow of the energy of life itself. Imagine the compounding, fiendish circuits, existing despite all logic.
Imagine the power input of billions of lives, lives beyond the normal, unimaginable vibrancy of an average human, capable of a lifetime’s worth of love and hate, creativity and murder, compassion and cruelty, empathy and apathy, piercing intelligence and wilful stupidity, lives that extend beyond the physical form and into the somewhere-realm that simultaneously forms and is formed by all these emotions and actions.
Imagine the difficulty of attempting to maintain such a machine, that links to a space that exists divorced but parallel to the universe, sitting on the knife-edge of reality, many of its constituent parts not even having an existence as we understand it, many of its processes governed by semi-sapient intelligences rather than predictable programs.
Imagine the impossible task of working with such an artifice, minute by minute, hour by hour, day by day, week by week, month by month, for a lifetime, for two lifetimes, for a dozen lifetimes, for a thousand thousand lifetimes spanning ten millennia, when all knowledge of such machinery is guarded, and even that is partly-guessed, poorly-understood, barely-known to begin with, each successive engineer bringing his own ideas, clouded by his personal interpretation of a hybrid of theological axioms and mechanical laws.