Scientists can really tell, eh?
“At a particular instant roughly 15 billion years ago, all the matter and energy we can observe, concentrated in a region smaller than a dime, began to expand and cool at an incredibly rapid rate. By the time the temperature had dropped to 100 million times that of the sun's core, the forces of nature assumed their present properties, and the elementary particles known as quarks roamed freely in a sea of energy. When the universe had expanded an additional 1,000 times, all the matter we can measure filled a region the size of the solar system.” Scientific American 1994
Cornell University reports this: ” Scientists say that the Earth is 4.6 billion years old while the universe is somewhere from 10 to 20 billion years old…The 15-20 billion year number comes not from the CMB (Cosmic Microwave Background), but rather predominantly from measurements of nearby and distant galaxies, particularly their rates of expansion away from us”
The difference between 10 and 20 billion years is 10,000 million.
I am sure PZ Myers with his God given intellectual abilities and all his scientific evidence can tell us… how old, exactly, is the universe give or take a couple thousand million years, Mr. Myers?