His answers were thorough and that was good, they weren't half answers that left her with even more confusion. They had different languages, they could translate things on the internet. She knows what the internet is because Peter had explained all about that.

People lived in space, like Ple Two's world and people did science experiements in space, which sounded a little irresponsible to her but Senku was saying it like it was normal, perhaps it was. And they spoke different languages to each other.

There are other people on the train from Japan, and from America and people who spoke English. She hasn't heard Russia but that's another country from his world.

The schools sounded stupid, why were there so many? Though it makes sense that a doctor wouldn't go to the same school as a baker. They needed to know different things.

But then his last words confused her all over again.

"How do they no be existing?" He had just said they had. Had his world broke?