QO turns mainstream physics upside down. It provides new and simple explanations for the genesis of the universe, the reason why symmetry is a good signpost towards understanding the universe, the behaviour of spacetime as described by General Relativity, and the arrow of time. It demonstrates why we can do without the concepts of dark matter and dark energy in order to account for the motions and structures of galaxies.
The most surprising thing about all of this is the mere fact that it is possible to provide a coherent account of the universe that is completely different from that of mainstream physics, yet comes up with very much the same predictions. Letting that get through to you is in itself is educational experience, and therefore well worth the read. Make a start at one of the following pages: