Our perception of space-time can be thought of in terms of event coordinates relative to our current state of consciousness.

Where there is no consciousness, there is no time.

Say, there is a book written by Tolstoy sitting right there on the table. To our unique human consciousness, the reality of the papers in the book, is infinitely different from the valuable literature that they possess. For the kind of consciousness possessed by the bug which eats those papers, literature is non-existent, yet for the Human Consciousness, literature has a greater value of truth than the papers themselves.

Reality is a construct of the neurons.

Why may we not be in the universe, as our dogs and cats are in our drawingrooms and libraries?

Truth, independent of the Self, is irrelevant to the biological existence of human life.