Being a history geek I will put it this way. Sure for some of the younger Generation losing the capability to text their friends 87 times a day would seem like 'total collapse' even if regular Ma Bell style phone service was still fully available. The thing is Collapse is just as much a series of events as 'Progress' is. It doesn't just stop when you get to voice phone level of 1890's technology, it keeps right on going for some time before it stabilizes. In the Western Roman Empire internal decay was well advanced by 450 AD and when the capitol of Rome was captured 476 AD being recognized as the "total collapse". However in 476 AD there was still a lot of functional infrastructure and a whole lot of skilled people who wanted to live their quiet normal lives living in what is today Italy.
It took about 400 more years before the Italians reached the absolute bottom from the heights the Roman Empire had achieved in 100 AD when they were in a semi stable large powerful Empire. They forgot how to maintain or even repair the infrastructure, let alone replace it with something new. In all fairness I would say the Empire in the west started decaying substantially right around 400 AD and kept right on decaying until around 800 AD. It was a very grim time to be alive, bands of brigands roamed the countryside and robbed travelers at will. Trade pretty much ground to a full halt because only large well armed caravans could travel and there just was not enough surplus to often support such an endeavor.
So America, your decay depending on whom you ask started right around the time of national peak oil, or perhaps a decade earlier or later. In the 1900-1950 period we went from walking at 4 mph or taking a train at around 40 mph to being able to get into a jet propelled aircraft and travel at 600 or even 800 mph. In contrast from 1950-2000 we went from most passengers flying at 500-550 mph to the elites flying at 1,200 mph in the Concorde in the late 1970's. So far in the 2000-2050 era we have lost the Concorde and every 'advance' in civil aviation has been made with the goal of packing more people into less space to harvest the 'economy of scale'. You are now 'lucky' if you can be packed into a too small seat with a too narrow aisle and fly at 500 mph along with everyone and their family at a price you can scrape together. I still think Civil Aviation will completely die as a commercial enterprise soon after World Peak because the energy needed to haul people and cargo is extremely high compared to other modes of travel. It is not just the cost of fuel, as many seem to think, it is the cost of the infrastructure that supports air travel. A fully laden Boeing 747 or Airbus A-380 causes tremendous stress on the paving of the airports. A runway or taxiway has to be able to support all the weight without cracking and preferably support a once around emergency landing if something goes wrong on takeoff.
If as I believe we started our decay loop in the USA around 1970 the Empire "fall" will be around 2045 reflecting what took place with Rome, but we won't hit our bottom until around 2500 AD.
So will we have a total collapse? Certainly, and we are already well down the road on that path. The good news for you alive in 2015, unless we have a full out nuclear war or a Carrington Event that is as bad as possible that collapse will go on grinding slowly down long after you have passed away.







