Early Dark Energy Is Not Dark Energy

Early dark energy is an attempt to try to fix this problem. Is to say, maybe this dark energy, which is just a number, and its constant, but now it's add a new thing. Let's not just change dark energy. Let's adding a new kind of expansion to the universe,. like a new unexplained expansion that can only take place in the early universe. This one lasted from leg zero to 400 thousand years after the big bank.