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slash baby. It's to the best of our knowledge. I'm Anne Strain Champs. Today, the edges of science.

One thing we like to do on this show is ask really big questions, like, what is reality? How did

the universe begin? Where does consciousness come from? Used to be those were questions philosophers

and theologians grappled with,

but today we talk with a lot of people who believe the only way we'll ever answer any of those questions

is with science.

For instance, physicist Lawrence Krauss said something like that on this show just the other week.

You're not going to answer these questions philosophically or

theologically for that matter. But what's really frustrating when some people say,

oh, science will never answer this question, well how do you know if you don't try?

To say to something, sorry, it's beyond the domain of science, it's just to close your mind.

Later this hour, physicist Leonard Mladenov, who works with Stephen Hawking, says something

similar.

We've decided as scientists that we don't want to just philosophize or just use pure reason

about the physical world, as people used to do many centuries ago.

We want to require of our ideas that they be testable, falsifiable, before we accept them.

So here's our big question today. Can science, or the scientific method, really explain everything?

I think some people think we know more than we actually do.

That's Marcelo Gleiser. He's also a physicist, but less certain than some of his colleagues,

that science has a main line to the truth. Steve Paulson got together with Gleiser recently

...