Hello, Cosmology for the layman says that there was a time t=0 when the universe was created out of infinitesimal length distance and before that nothing existed not even time. OK, but this rests on the assumption that there is always a manifold from which we cut off our space slices in the past until we reach a point where our space coordinates vanish. The space coordinates dissapear at t=0, not the manifold itself! So, the whole spacetime manifold must have popped out into existence at once! I don't believe that space is evolving with time right now as we speak. After all, in SR the spacetime is a unified plane and there is no distinction between space or time. So why layman books are saying that spacetime is expanding etc? It's only space that's expanding and any particular spacetime must be a static solution of the GR differential equations, given the initial conditions. And it must have popped out into existence all at once, with everything in it that has been and will become in the future. Is this correct or have I got it all wrong?