How much technology was there before the flood? I don't know, but I'll tell you what we do know (considering that Genesis is true):
There were tools made of bronze and iron. (Genesis 4:22)
It was common to live 900 years. (Genesis 5)
(If you believe that people really lived that long, think how much one person could accomplish in a lifetime. If people still lived that long, than Galileo, Newton, Kepler, Einstein, etc. would all still be alive, relatively young, in fact.
Man was wicked. (Genesis 6:5-13)
The ark was made of wood and coated with pitch. (Genesis 6:14)
Not a whole lot there about pre-flood times, but I think that even though people lived a long time, they couldn't have had what we think of as technology: cars, computers, airplanes, telephones, etc. For one thing, it would have been mentioned, and for another, wouldn't Noah and his family have kept the technology (and all memory of it) from being completely lost?
