EDIT: DAMMIT HARTE, YA BEAT ME!!!
Well now he got lots of answers to dig through.
reply to post by IvanZana
Fine I'll try to answer your question if you want.
Also, why would our ancestors build something that can last thousands of years, they msut of planned that.

Yes they did plan it. They planned to use stone. Ancients had many options when it came to building material: stone, wood, mud, metal, concrete and
other localized methods. Metal wasnt so much used though, I'm only heard of the Indians using girders in temples, otherwise its mainly clamps to hold
stone together. Concrete was also a sort of side part like the metal, I cant think of any old building entirely of concrete off hand.
Anyway, what this meant is that if you want to build BIG, stone was the only solid option. The Egyptians did build mud brick pyramids: they're almost
totally collapsed today.
No skyskraper will last more than 100 or more years.

You sure? There are skyscrapers older than 100 years in New York. The Chrysler Building (one of the most beautiful structures I know of, sadly I've
never seen it in person) is almost going over 80 years now.
How and why did we lose the ability and knowledge of not only building the pyramids but the reason for it?

Pyramid building is all about what the Pharaoh wanted. We have not really lost the ability to do it, just the will. And the knowledge, as there was
little to pass on, is lost yes. Alas, there wasnt any "Pyramid Construction High School" in Cairo. When they declined in power, pyramids where no
longer needed nor wanted.
You can compare this with churches. Imagine if the religion was gone: no Christianity anymore, nothing. Would we still build cathedrals and churches?
(well we dont really do it anymore anyway, lol).
It seems that mabey the pyramids were built so sturdy to survive earth catacalysms as well as possibly making the pyramids not only calendars but a
clock to predict the next cataclysms or shifts of ages which could of wiped out our ancestors many times before.

Its actually not a bad idea, but its overkill. And since there is little writings or space inside the pyramid, it would be inneffective to build it as
some sort of shelter or legacy. I mean, a pyramid half the size would have been just as good for this purpose (the smaller pyramids on Giza are still
standing).
There are many pyramids in China, Egypt, Mexico.
I have to ask, Did these ancient peoples coincidentally build the pyramids all over the world at almost the same time frame without having any contact
with eachother or did they corroberate with eachother?

Yes. Each of these used DIFFERENT TECHNIQUES with DIFFERENT PURPOSES. The Chinese pyramids are more big burial mounds than actual "pyramids". The
Mexico pyramids all served a specific purpose: either to raise buildings or be used as a ritual location. Most of them are also quite small with step
design. In comparison, the Egyptians built their pyramids very tall and very sturdy, with no exterior purpose (other than to intimidate perhaps).
There are many technologies that are similar in the world.
How about the Aztec ball-through-wall-loop arena and the Colosseum? Basicly the same principle. That doesnt mean the Aztecs went to Rome to try to
replicate it. It just means it served the same purpose: A crowd on benches needed to see an open area. Or another example, the obsidian blades that
look remarkable like metal swords. Yet again, something that serves the same purpose: an extension of your arm to hurt the enemy.
Back in the ancient days, people werent as dumb as we thought they where. They didnt go to school to learn structural engineering for 5 years. They
had to
figure it out as they went. I give them credit for more intelligence than your average hillbilly American
Now my fingers are tired
[edit on 15-2-2008 by merka]