## 3 Results and Discussion  
The current paper originated in the work of implementing WSNs in the building sector, which would dramatically improve the value chain of this sector. There are a number of reasons for this:  
* By designing WSNs in ways which make repurposing possible, a sensor can be reused during the life cycle of buildings, reducing costs to almost zero. However, this requires remote access for reconfiguration. * As a consequence, large savings can be made on building monitoring and automation. * The quality of components, assembly, operation, maintenance, renovation, and many other aspects of the buildings can be improved by utilizing the data from the WSN sensors. * Procedures for building site management and building facility management can be improved. *... and much more. The current paper examines the application of WSNs as representatives for the Internet of Things. They show economic advantages compared to wired solutions. The energy consumption of the WSN is important for this comparison, and since there were power lines close to the installation points, the sensors were designed with wired power supply. A lot of WSN technology is still at a product level that demands rather a lot of adjustment to fit a particular solution, especially for non-programmers. So it seems unrealistic to expect remote sites to have the skilled labour to do the necessary adaptation of the components involved. The alternative is a procedure whereby the solutions are prepared by skilled personnel in advanced organizations, and then shipped to the remote site for installation by less skilled personnel on site. The introduction of sensors in the larger context of the IoT can increase the value of the technology even more by enabling remote configuration, surveillance, control and, not least, the avoidance of mashups in the ever more complex overall systems and services. This would be a game-changer in building services. Extending this view with the developments in big data, the overall technology mesh will enable the introduction of smart solutions, introducing external factors such as weather and energy prices into the control strategies and improving the overall efficiency and economic benefit. The main observation in this paper is that high technology and the Sensing Internet can be applied even in remote areas such as Greenland. This opens up new opportunities for such remote areas. Telemedicine is one of the obvious applications, building automation another. A second discussion that the current paper opens up is the relationship between complexity and robustness. A prime strength of WSN is its flexibility, which means that sensors can join and leave the network without it being necessary to reconfigure the setup. This makes WSN technology especially robust compared to alternatives. The Sensing Internet is a rather complex, sophisticated, advanced and multi-technological solution. Such complexity in a geographically and technologically distributed system implies dependence on all parts functioning in a stable way. In the extreme conditions of Greenland, the robustness of technology can sometimes be a surprise. Here is an example: the heat exchanger is a well-known piece of technology that is widely applied and could be called low-tech. It would normally be evaluated as robust and stable technology. However, in extreme climates like the Arctic, such technology fails; in the above-mentioned case, the liquid in the exchanger froze, resulting in leakage and total failure. Comparing this simple technology with a complex setup such as the Sensing Internet with WSN, one might expect that this high-technology would certainly fail. But it is not that straightforward. With the application of sensor technology and IT-technology, it is possible for unskilled labour to replace components easily, which makes the life-cycle performance rather robust. With remote intervention, the technology installed can be monitored, maintained, and thereby kept robust and stable.