Hey, this is Erica Barris.
Before we get to the show, I wanted to tell you how excited I am to see you,
our listeners in person, on our book tour in Pittsburgh.
I may have amused story.
I want to workshop with you all.
And I'm going to be talking with Carnegie Mellon's Kevin Zulman,
the author of the game theorist's guide to parenting.
The Planet Money Book Tour is going to a dozen cities.
Every stop will be totally unique with different hosts and guests.
And if you get a ticket,
you can get a tour exclusive tote bag with your purchase while supplies last.
Find the show nearest to you at the link in the show notes or go to planetmoneybook.com.
And thank you.
This is Planet Money from NPR.
When I think of an inventor, I think of somebody like this guy.
My name is Leonardo.
And Italian inventor named Leonardo.
Like, come on.
He's very passionate, very smart and very precise.
You speak five languages.