What I’m thinking right now

The concentration situation didn’t improve. It was a fight all afternoon to get anything done. Then I did my absolute classic – at about five pm I just drifted off onto the internet, reading about the financial crisis. I didn’t leave work till 8pm, having not achieved about an hour of serious work since lunchtime. 

How can it be this hard to concentrate? And why is it so hard to concentrate on something that you’re not supposed to be working on, even if it’s quite hard going, rather than something you’re supposed to be looking at? It’s like the most boring task in the world immediately becomes attractive just because it’s not what I’m supposed to be doing.