Slow but steady

This document is slowly starting to look like a PhD. It was supposed to do that before Christmas, but some personal things got in the way. I handed in a draft anyway, which was a vast improvement on previous attempts, but not finished in any way really. Anyway, I now seem to be adding about 600-1000 words per day that explain things a bit more clearly, as per comments from my supervisor. It still looks a bit like 4 separate experiments, which to some extent it is, but I will work on showing how these are linked (which they are).