there has been no serious attempt by digital media developers to engage in a constructive public dialogue with historians of information and leading librarians. There is, perhaps, a reason for this. As Geoffrey Nunberg starkly revealed in 2009 in the Chronicle of Higher Education, Google cannot celebrate the history of indexing and cataloguing because it would draw attention to its matrix of errors. As of yet, Google Books does not work as an accurate system of cataloguing and searching for books. Nunberg showed that the seemingly clunky nineteenth-century Library of Congress Classification system is still more accurate.

Several bacterial strains have been engineered to detect transient gene expression in the laboratory8,9,10,11 and in vivo for up to 12 d12,13

Many tasks worth completing require cooperation –yet crowdsourcing has largely focused on independent work. Distributed teams have always facedchallenges in cultural differences and coordination[60], but crowd collaboration now must createrapport over much shorter timescales(e.g., one hour) and possibly wider culturalor socioeconomic gaps