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Which part of the human body doesn't actually exist? The answer to that at the end of the show.

My name's Tom Scott, and this is Lateral.

Our guests on the show today are like walking encyclopedias, full of interesting facts about

everything from reproductive cycles of house flies to the history of paper clips. Just don't ask them where they've put their car keys.

We start with a returning guest to the show,

one of our regulars from Escape This Podcast.

Danny Siller, welcome back.

Thank you.

Alone this time.

I'm alone and I'm scared.

Yes, normally at this point,

we have Bill from the show here as well.

Now, he will be appearing at some point in this recording block, but this time we've split you up a little bit. How are you feeling about not having the backup there?

Bizarrely terrified. When we do escape rooms, it's always you want to be the one who solves the puzzles, but it is nice to have that other person there so that if you're looking at something and you don't get it, you can just hand it off. So I hope the other guests can be that savior for me as well. Well, they are also going to be sort of that for each other, because we have a pair of folks joining us here. We're going to start from Kids Invent Stuff, Sean Brown. Hello. Hello, lovely to be here. Welcome to the show. This is your first time here. How are you feeling?

Yeah, I'm nervous. I'm not entirely short what to expect, but I'm excited.

I mean, that also kind of sums up your channel there. Do you want to talk a little bit about Kids Invent Stuff?

Because it's a format that I just love.

So me and Ruth have a YouTube channel

where primary school kids, so kids age 4 to 11, they draw their invention ideas, they send

them to us and every month we pick one of their ideas and bring it to life. And I'm sure Ruth can

...