"Oh! A chemical!" He does know what those are at least, "That is okay. I probably wouldn't understand a more detailed explanation. I'm from way in the past, so there is a lot I am still learning about how things work now!"

Diarmuid nods to encourage Donatello to go ahead and take the sword, "It sounds like your father is very wise too. Weapons and the people who use them are partners. One can't work well without the other!"