In 2017, why did the Budget Airline K Air rebrand itself as AeroK? The answer to that,

at the end of the show. My name's Tom Scott, and this is Lateral.

Forgive me if I seem a little bit unprepared for today's show. I was only sent the script

just before recording. Yesterday, I did ask our producer what was going on, and he replied with a

screenshot of Level 310 of Candy Crush, which is understandable, because the licorice there is pretty

tricky. Hoping for some delicious questions today, we start with returning to the show.

Transport nerd, you said that the other day, I think, and transport documentarian. Jeff Marshall, welcome back. Thanks, Tom. Nice to be here again. It's always so much fun to be on Lateral. As it is, I love it. I love it so much. Han was saying off air minute ago that she binge-watched, and yeah, last night in bed, I watched like two hours of straight of Lateral, because it was just so much fun. I couldn't read whether you were being sarcastic or not.

It was so dead. And, yeah, last night in bed, I watched like two hours of straight of Lateral, because it was just so much fun.

I couldn't read whether you were being sarcastic or not. It was so deadpan at the start. I'm sorry. I couldn't try to work it out. Genuine. No, I love it. You watch one, and you watch 20. It's great. Every time that you're on, I ask you what you're working on or something like that. I'm going to just give you a root one ridiculous question.

Favorite train. Go. I don't have one. I have a favourite station. I like Subbri Town on the Piccadilly Line. If you've never been to Subbury Town, that would be my hot pick for looking just at sort of classic 1930s Charles Holden architecture. There we go.

All right. Very best of luck on the show today. You are joined by mathematician from the finite group.

Katie Steckles, welcome back to the show. Hello. All right. I'm going to go with the boring Route 1 question for you as well.

Give me a good maths fact. A good maths fact. 2025, which is the year we're now in, is an incredible number for lots and lots of different

reasons, but it's the sum of the first nine cubes and it's the square of the sum of the first nine

squares. I think there's a whole bunch of different ways you can make 20-25, and it's also 20 plus 25 squared. It's, there's so many things. It's great. And presumably,

that sum of all the cubes so far isn't going to happen for another thousand years, because 10-

Yeah, the next cubed is massive, so... Yeah. I have no idea if that fact is going to come in useful today.

I suspect it's not, but good luck on the show.

Rounding out the panel today, having made, frankly, a spectacular debut appearance last time.

Hannah Crosby, welcome back to Lateral.

Hello, thanks for having me back.

I'm so excited to be here again.

...