The temple at Gobekli Tepe was built 10,000 years ago the pyramids were built 4,600 years ago thats 5400 years of technological advancements between the two. If you actually take time to look at the late paleolithic and the copper ages art, technology and building you will find everything at the pyramids is entirely possible. It was not a matter of technology that was daunting it was an organization of a labor force. Much like today, it isn't that we cannot solve our technical problems with our technologies, its getting enough people to agree to do it. Invoking aliens or deities to explain a great building/structure is insulting humans. Humans for all their flaws are quite adept at creating things as well as destroying them, they don't need help, they like doing it. Finding True North is EASY and the Human mind was just as smart back then as it is today. What is the difference? A frame of reference for technology is that it is evolutionary each sucess and mistake is taught to the next generation most sucess are rememebered and sometimes mistakes are forgotten. The Pyramids are not really sophisticated either. After all if Aliens, helped why the bloody heck do the pyramids feature simple FALSE ARCHES (weight counter balanced) instead of the TRUE ARCH (Key stone locked), aren't these alleged interlopers allegedly from other times/dimensions/star systems/realities, you'd think teaching the simplicity of True Arch would be childs play to them? The reason the True Arch is not there is because no one in Egypt had come up with it yet or met anyone who had. Never underestimate Humans, even the least brainy of them has valuable insights into the universe that others have not thought of.