The story,” the intruder said, settling back in the chair. “Once upon a time, over the gravity well and far away, there was a magical land where they… - Iain Banks

It could always all be unreal - how could you ever tell otherwise? You took it on trust, in part because what would be the point of doing anything else? When the fake behaved exactly like the real, why treat it as anything different? You gave it the benefit of the doubt, until something proved otherwise.

And what was glory but something that reduced the more there were of you to share it?

he saw that which cannot be seen; a concept; the adaptive, self-seeking urge to survive, to bend everything that can be reached to that end, and to remove and to add and to smash and to create so that one particular collection of cells can go on, can move onwards and decide, and keeping moving, and keeping deciding, knowing that - if nothing else - at least it lives. And it had two shadows, it was two things; it was the need and it was the method. The need was obvious; to defeat what opposed its life. The method was that taking and bending of materials and people to one purpose, the outlook that everything could be used in the fight; that nothing could be excluded, that everything was a weapon, and the ability to handle those weapons, to find them and choose which one to aim and fire; that talent, that ability, that use of weapons.