Qoais, on 27 December 2009 - 12:52 AM, said:
Just a silly question here. Do you know how to drive a car? If you do, does that mean you can build one as well? If I can fly a space ship, does that mean I know how to build a sewer system on an alien planet? If I'm a pilot of said craft, does that mean I know how to manufacture medical supplies on an alien planet? I would think that whatever tools and equipment they had was pretty precious to them and no doubt they kept it well to themselves. Whatever they might have done on this alien planet had to be done with what was here. Why would any of THEIR precious belongings be left behind? They'd be starting from scratch when they got here, to build anything ON the planet. They could have a medical lab aboard ship, but how does that teach them how to build one on the ground? Say they needed test tubes. They'd have to build a glass manufacturing plant first so they could make test tubes. Hardly. They used what they found here that was basic and did the best they could with what was here. Therefore, everything we find will be indigenous to this planet. (If were were visited by aliens in space craft that is)
Yes, I know how to drive a car. Now, if I have a super duper flying car that will take me to other planets then I would be sure to know how to manufacture items incase that car broke down or needed something. OR if my goal is to "help" other creatures then yeah, I would know how to tell them "yeah, that pointy shape is great but if you create glass panels and focus the heat you can do _____".
Build a glass manufacturing plant? Fire and sand. You're good, you can make glass.
Even if they didn't leave anything behind what is wrong with teaching them how to drill wells and pump water? Teach them that the slimy goop on bread that looks like ______ can be used to make _____.
The theory is that aliens came here to aid man and obviously not secretively if they allowed pictures to be "created".
Pyramids are the best aliens could do?
If your argument is that they ended up here accidentally and were being secret then that doesn't fit with the other theories being discussed.
We send astronauts into space and train them how to fix things and send extra stuff with them just in case and they leave stuff all over the darn place.
Nibs