Dude, if you seriously believe that there were "no major advances" for 6,000 years and then *BANG* everything changed in one century, you NEED to break out some history books. You are SO far off the beam here that it undermines your basic credibility as to being qualified to offer an informed opinion.
Horse drawn wheeled carriages and wind driven sailing ships carried both the Egyptians of 2,000 BC and the English of 1800 AD. Egypt and Rome were built upon the backs of slaves; so was America. Yes; there were advances during that span of roughly four millenia, but none like those of the very recent past.
I knew an old man who I helped with his lawn work about four or five years ago. He was a retired railroad engineer, and he liked to tell stories. When he was a boy, automobiles were a new concept; when he was a young man, airplanes were a new concept; and last time I saw him, he was sending E-mails and playing with a new digital camera. As one man, he lived to witness pre-industrial culture, the industrial revolution, the modern age, the digital age, and the information age.
During the entirety of recorded human history, with the exception of less than one hundred years, women of all cultures and nations have been considered essentially inferior to men, generally unfit for leadership or paid labor. In itself, that is an amazing and unprecidented example of how little we changed as a human race during all those prior ages.
In the field of medicine one hundred years ago, just as it had always been, a common illness could easily kill; one which today may be corrected for $5 and a trip to the supermarket. In one century, human lifespan has been extended by 33%.
Before you discount my credability any further, I challenge you to provide me with a single example in another period of such epic technological and social growth as that which the 20th century was host to. The era of the pyramids is the closest second I can think of; but those monuments still pale when compared to the insides of your computer; a computer which was built not by slaves, but by free men and women.