That makes sense as Senku explains it--and shows his intelligence, the more he speaks. Tidus understands what he's saying, but at the same time... he's aware that whatever this guy ends up doing is going to be beyond him.

"If you find someone to work with," he says, perhaps the one last idea he can offer, "there's a guy, Piccolo--he can create objects with magic. He used to make weapons for the train, but he made some lunchboxes and drink bottles for me recent. For everyone, really--they're for the missions."

And for anyone who'd need them.

"If you need materials, he might be okay making a few things, s'long as they won't hurt anyone." And to explain, just in case Senku wasn't around when it happened: "He stopped making the weapons after one guy killed another passenger. But as long as you're making something useful, he's fine with it. You'll just need to ask him what he can make. Plastic shouldn't be hard."

As an example.