Dadaism has arrived in the office. The movement, which was big around the time of the first world war and ridiculed the meaninglessness of modern life, is perfectly suited to the workplace. The pomposity, the pretence, the downright idiocy: all are gagging for the Dada treatment.

The current master of business Dada is David Thorne, an Australian designer and blogger who cites his chief interest as reciting prime numbers backwards.

He first became famous about a year ago when he tried to pay a chiropractor's bill with a drawing of a spider and published the e-mail exchange on his website www.27bslash6.com. If you haven't seen it you really ought to look. The joke is in the gap between the normal idiocy of business communication and the abnormal idiocy of the spider.