Ever since I was a child I've been able to immerse myself completely in things to the exclusion of everything around me. This power of concentration, or "total lack of situational awareness" if you prefer, never left me. My favourite anecdote about it is the one from when I was about ten. My dad handed me a drink whilst I was reading. I took a big swig of it without looking at it. It was beer (stout). I ran around the house trying to find things to eat and drink to take the taste away for a good quarter of an hour.

Today was the first time in a while I've had this particular ability tested. I work in a big glass fishbowl of an office. I like the fishbowl. It's clean, modern, has good lighting, and I have a nice desk between two lovely colleagues, with three on the other side of the partition. The fishbowl is quite a busy place, with phones ringing and people talking.

I was in the middle of writing a document when one of my favourite lecturers came up behind me. According to my colleagues, she became curious when I failed to react to her presence, especially since all five of them had acknowledged her. (She has a very strong presence. She is also quite mischievous.) She crept up very close to my chair and said cheerfully, "Hello!"

I leapt out of my chair and then burst out laughing. She looked almost as astonished as I was. "How did you not notice me?!" she demanded, sounding mildly offended. "It's my superpower," I replied. "Rubbish, isn't it?"