Of course this relies on carefully interpreting Genesis to fit in with what we know - for instance the assumption that the Sun, Moon and Stars existed before the 4th day which is not stated in the actual text. Worse it requires distorting what we know to fit in with Genesis. Fruit trees, for instance, appear long after the first land plants.
But the most amazing thing is the assumption that the author required assistance to work out that the beginning occurred before the other events !