Its likely that they are both causing the dramatic increase in spending, but I feel that inefficiency in the health care system is more of a major contributor. Although our liberal use of technology can be costly, technology can also play an important role in preventative care. There definitely needs to be a happy medium for use of technology, but it shouldn't be completely discouraged. I believe that increased spending has more to do with inefficiencies within the system. Inefficiency and mismanagement affects the fundamentals of the health care system and are problems that have been lingering for decades.
I have heard many cases about doctors ordering unnecessary tests, labs, bringing on other doctors, etc. just to run up the patients bill. These are where some of the problems may lie. Hospitals are struggling to stay open and programs like medicare are falling short due to such inefficiencies. Work ethic should be observed and tighter regulations should be put on medical professionals, hospitals, and insurance companies. Spending seems to be increasing because the health care system is being run more like a business than anything else.