Koolhaas's next landmark publications were a product of his position as professor at Harvard University, in the Design school's "Project on the City"; firstly the 720-page Mutations, followed by The Harvard Design School Guide to Shopping (2002) and The Great Leap Forward (2002). All three books involved Koolhaas's students analysing what others would regard as "non-cities", sprawling conglomerates such as Lagos in Nigeria, west Africa, which the authors argue are highly functional despite a lack of infrastructure. The authors also examine the influence of shopping habits and the recent rapid growth of cities in China. Critics of the books have criticised Koolhaas for being cynical - as if Western capitalism and globalization demolish all cultural identity - highlighted in the notion expounded in the books that "In the end, there will be little else for us to do but shop". However, such cynicism can alternatively be read as a "realism" about the transformation of cultural life, where airports and even museums (due to finance problems) rely just as much on operating gift shops.  When it comes to transforming these observations into practice, Koolhaas mobilizes what he regards as the omnipotent forces of urbanism into unique design forms and connections organised along the lines of present-day society. Koolhaas continuously incorporates his observations of the contemporary city within his design activities: calling such a condition the 'culture of congestion'. Again, shopping is examined for "intellectual comfort", whilst the unregulated taste and densification of Chinese cities is analysed according to "performance", a criterion involving variables with debatable credibility: density, newness, shape, size, money etc. For example, in his design for the new CCTV headquarters in Beijing (2009), Koolhaas did not opt for the stereotypical skyscraper, often used to symbolise and landmark such government enterprises, but instead designed a series of volumes which not only tie together the numerous departments onto the nebulous site, but also introduced routes (again, the concept of cross-programming) for the general public through the site, allowing them some degree of access to the production procedure. Through his ruthlessly raw approach, Koolhaas hopes to extract the architect from the anxiety of a dead profession and resurrect a contemporary interpretation of the sublime, however fleeting it may be.  In 2003, Content, a 544-page magazine-style book designed by &&& Creative and published by Koolhaas, gives an overview of the last decade of OMA projects including his designs for the Prada shops, the Seattle Public Library, a plan to save Cambridge from Harvard by rechanneling the Charles River, Lagos' future as Earth's third-biggest city, as well as interviews with Martha Stewart and Robert Venturi and Denise Scott Brown.

Answer this question "What did the great leap forward consist of?" by extracting the answer from the text above.
All three books involved Koolhaas's students analysing what others would regard as "non-cities",