I'm catching up on some work. It's sunday and there's no one here.. Not in this wing, not on this floor, not in this building. The security guard is doing his tour somewhere outside.. The blinds in this building are fully automatic.. and it's a sunny day.. As a result, every X seconds, the blinds shift just a few picometers and it sounds like someone is typing on a keyboard. I'm sitting in this huge open space with blinds all over the place. I'm constantly looking behind me or over the cubicle walls in front of me because I think I hear someone typing just meters away.. This is freaking me out!