Do you have a favourite mug? I do. It’s nothing special. Just a bog-standard porcelain mug with a picture of a Hare on it. I don’t have any strong sentimental attachment to it. It wasn’t a gift or anything. I just chose it as a replacement for one that broke. I habitually use it, choosing to ignore all the other mugs in the cupboard. Now you may well ask where I’m going with this train of thought. Well, here’s where the foibles of human nature come into play. If my favourite cup happens to be in the dishwasher, I find I do not enjoy my beverages quite as much when drinking from another cup. As I’m not a qualified psychologist, I won’t venture too far into analysing such behaviour. But it’s fair to say that this has got something to do with territoriality and our sense of identity in some way. Another, more complex example of this behaviour would be my desk. It is neat, clean and functional. And then there is my personal computer. I spent several hours upgrading the hardware today. I subsequently spent triple that time, fine tuning, tweaking and arranging everything. Why? Because I like things to be “just so”.