In a recent Nature article, Albert-Lászlo Barabási and João Gama Oliveira, have found the perfect excuse for lazy people not answering some emails in their inbox: they analyzed the time response of emails and found that they follow a power law probability distribution of the form P(t) = 1/t. In particular this implies that not even the mean response time is finite. Hey! why should you then expect me to answer your emails within my lifetime period! ...