I really shouldn't be this tired. All I've done is play one semi-game of soccer, one semi-game of netball and work two days. I'm absolutely stuffed.
Granted the work did involve me walking 9 times between buildings and up and down two flights of stairs at each, but I do that quite a lot so it shouldn't really affect me that much.
I'm going to blame the lack of coffee.
In other news, arguing with philosophers (like ones that do it for a living) is bloody frustrating. Particularly when you're arguing something fairly scientifically based. And language is an important consideration, no matter how you're redefining things. Meh.