The Rise and Fall of the Roman Empire

I have been thinking about technology today. I am not sure what spawned my most recent bout of deep thought but here it is for all those in blog world in a nutshell. What will happen if one day we lose all of our technology? Even the most technology resistant of people still use and encounter it on a daily basis. There are so many things now that people do not do, machines handle it. What would happen one day if we didn't have the machines to handle it, would anyone know how?
This dilemma brings to mind the Roman empire. They were innovators of their time. They had come up with incredible inventions of technology. They had figured out plumbing, running water, heating and cooling, etc. Then one day it was all gone and hello Dark Ages. It took hundreds and hundreds of years for people to regain what was lost with the fall of the roman empire. How long would it take us?
I am glad my math teachers in high school made us learn how to do the math by hand and not just rely on calculators, hopefully teachers are still doing that. Computers and technology are great, but anything that we are too dependent on is dangerous.
I leave you with an extrapolation of Aristotle's Doctrine of the Mean "Moderation in all things"