My feeble understanding of science, is that you can't make something out of nothing. How can you take mass the size of a marble and generate the relative mass of the universe, much less our solar system, or even my back yard, without adding something along the line?
Alan Guth, one of the co-developers of inflationary cosmology, has called the universe the ultimate free lunch. The 'marble' is made up of something called 'false vacuum', which has negative pressure. As it expands, it heats up and the resultant heat energy starts to congeal (as it were) into the ordinary types of elementary particles we see today.
...the exponential decay of the false vacuum is slower than the exponential expansion. Even though the false vacuum is decaying, the expansion outruns the decay and the total volume of false vacuum actually increases with time rather than decreases. Thus inflation does not end everywhere at once, but instead inflation ends in localized patches, in a succession that continues ad infinitum. Each patch is essentially a whole universe — at least its residents will consider it a whole universe — and so inflation can be said to produce not just one universe, but an infinite number of universes. These universes are sometimes called bubble universes, but I prefer to use the phrase “pocket universe,” to avoid the implication that they are approximately round.
Some researchers are also now working on the idea that not only is inflation future-eternal (i.e., there's no end to it) but it's also past-eternal (i.e., there was no beginning to it). So inflation was, is and always will be. Sound familiar?
But, clearly, this is work in progress...
So, in other words, it does exactly what scientists have taught is impossible, historically? Instead, he makes up this nice theory to fit his suppositions. Unbelievable, at best. He can ask God...