[ WP ] Tomorrow , everyone wakes up with just the clothes on their backs and the knowledge in their heads . It is now 10,000 years in the past . How long does it take for us to recreate everything we have today ?

I watched glumly as the flames engulfed my home. Another one gone, another bastion of knowledge fallen. 
 We woke up one day ten thousand years in the past. We woke up to chaos and death. Billions starved as the complex agriculture that sustained us no longer existed. And the world... forgot. 
 With the focus on survival, scant thought was given to preservation of knowledge. And thus the knowledge fell. Some of us ( I know of the European groups, the other continents are silent ) tried to ensure we regrew as a species, that our progress would continue. 
 The boat rocked as another eruption sent shivering waves through the sea. We failed. Every. Single. Time. 
 The first time was nicknamed'Atlantis' ironically. That sank beneath the waves, a honeycomb of rock collapsing under the pressure of nature. 
 We moved into the Mediterranean, to avoid heavy natural forces. We managed to get civilization going; flushing toilets, a rudimentary tram system. I stared at the volcanic eruptions that drove us from our sanctuary. 
 Others talk of Greece, of Egypt and Alexandria, but I know my history. We *will* fail; Alexandria will burn, Greece will fall to barbarism, and mankind will have to rediscover all that we lost. 
 I'm going to Britain. At least there I know'those who came before' survived in the tales, the Tuatha de Danaan and the like. 
 I think I'll like being an elf. I always liked archery.
