“Oh… Well, I suppose we could fly, but we'd have to check the gear out and it's all booked for the day, so, since that's not an option I guess we should cancel that. Too bad, because I really wanted to get your take on the state of our practice weapons. Maybe soon?” She didn't seem that put out at least and didn't punish him with a lot of extra work, though she did ask him to walk to his dorm and back as many times as he could without hurting himself, to help build his injured leg back up.

Tor didn't bother with dinner after that, it was still mid-afternoon when he couldn't comfortably walk anymore, so he started working on the poison testing device before he could collapse from hunger. The light turned out to be the simple part, now that he understood it, adding in the proper fields for all the foods he ate was harder. Not that they weren't familiar to him, he ate them after all, so it wasn't that difficult to remember.

No the hard part was holding all the fields at once, in the end he had to do them in a cascading style, adding one to another and into much larger sub-fields that he used for the final make. It took all night and most of the next day. And then the day after that.

Someone fed him something, which he hoped wasn't poisoned, and they gave him water to drink. Right. He added water to the list of things, then juices and cow’s milk, goat’s milk and struggling to remember what it was like from the few sips he'd ever had, wine and hard cider.

The complexity of the field was huge compared to what he'd ever done before. The power levels needed were small, but there was just so much to focus on. It wasn't enough just to know food, he had to separate the plates and cups, from things that could be used to harm a person as well. Plus hundreds of other things, including just a sense that something might be unbalanced in a food item. Or around it. Diseased food too.