Michio Kaku: There are 2 types of god. Only one is within the boundary of science.

September 28, 2019

Well, when you talk about religion, I like
to quote from Galileo. Galileo said, the purpose of science is to
determine how the heavens go. The purpose of religion is to determine how
to go to heaven. So in other words, science is about natural
law. It’s about the laws of nature. While religion is about ethics, about how
to go to heaven, how to be a good person, how to earn the favor of God. So you see, as long as you keep these two
separate, there’s no problem at all. The problem occurs when people from the natural
sciences begin to pontificate upon ethics and when religious people begin to pontificate
about natural law. That’s where we get into trouble. Now, the boundary of the two, the question
arises. Can you prove the existence of God? Well, first of all, let’s be clear about this. There are two kinds of God. Einstein was very clear about this, two kinds
of God. The first God is a personal god, the God that
you pray to, the God that gives you your bicycle for Christmas, the God that smites the Philistines
and destroys your enemies. That’s the personal God. Einstein did not believe that the God of the
universe created us just so you can get that wagon for a Christmas present. You see, Einstein believed in another god,
the god of Spinoza, the god of liveness, the god of order, harmony. The universe could have been random. It could have been chaotic. It could have been messy. But the universe is actually quite elegant,
quite simple, and in fact, is gorgeous. You can put the laws of physics as we know
them on a simple sheet of paper amazing. It didn’t have to be that way. Therefore, you ask the question, is the existence
of God provable? Well, what is science? Science is based on things that are testable,
reproducible, and falsifiable. But you see, the existence of God is not testable. It’s not reproducible. We cannot reproduce God at will. You cannot put an angel inside a box and demand
that miracles take place. It doesn’t work that way. That’s why religion is based on faith rather
than things that are objectively testable, falsifiable, and reproducible. Now, that doesn’t mean that God doesn’t exist. I don’t know. I don’t know if God exists or not. All I’m saying is that science is limited
by looking at what is testable, reproducible, and falsifiable. There are areas where you push the boundaries
of that, like the Big Bang. You cannot reproduce the Big Bang. You cannot test the Big Bang. It’s like a detective story. You can only look at the clues, the clues
left over from the Big Bang. So to calculate the instant of creation is,
in some sense, outside science, because it’s not reproducible. You cannot reproduce the Big Bang. But you can then trace the history of what
happened afterwards, like a murder mystery. And that’s where a lot of science is done. And that’s why I say that the existence of
God is not within the normal boundaries of science.

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