66). Furthermore, social software will only increase in importance in helping organizations maintain and manage their domains of knowledge and information. When networks are enabled and flourish, their value to all users and to the organization increases as well. That increase in value is typically nonlinear, where some additions yield more than proportionate values to the organization (McCluskey and Korobow, 2009). Some of the key characteristics of social software applications

The last century has seen an increase in the level of international purchases which has been supported by the developments in transportation and technology. Goods can move faster than before with developments in logistics. The negotiation and forming contracts for purchase with companies and communicate with potential suppliers in distant countries is also easier than in the past with the internet and tools such as video conferencing and emails.

Staircase ramps which are comprised of steep and narrow steps that lead up one face of the pyramid were more in use at that time with evidence found at the Sinki, Meidum, Giza, Abu Ghurob, and Lisht pyramids respectively (Heizer). A third ramp variation was the spiral ramp, found in use during the nineteenth dynasty and was, as its name suggests, comprised of a ramp covering all faces of the

According to Montgomery (2003), "Higher floors of buildings tended to rent at a substantial discount, due to the need to climb several flights of stairs to reach one's workplace or residence. Otis's invention of the safety elevator at mid-century heralded the end of this constraint on vertical real estate development" (495). Likewise, Masden notes that the increasingly confident use of the relatively new ' elevators' also fueled demand for