We've all suffered bad days at the office. You forgot your RFID pass for the door-entry system and had to call reception to gain access. Your favourite hot-desking spot was occupied, the office was too cold, and the strip-lighting above the spare desk you finally found was too bright. Later, you struggled with a meeting room's audio-visual equipment before an important video-conferencing session, and the resulting stress meant you didn't perform well. Towards the end of a long day, at short notice, your boss requested strategic ideas for an upcoming planning meeting, but by this time you were tired and lacked inspiration.