The illuminatti were the ancient civil engineers. How the heck were you going to pass exams in civil engineering in 2000 bc Egypt, Greece, China ? Nowadays they give us a CSE paper and it says "this is a riveted joint strut, find the Euler equation, stretch modulus, amount of cement needed". If you don't know you are off. But the Egyptians had to ask the Pharaoh. Hence the houses were falling on top of their heads and they were all being killed. The only way to get around this was for the illuminatti to spot the smart kids in the neighbourhood and give them the title of civil engineer or architect. As with all types of old institutions, the momentum carried the illuminatti forward and the institution survived floods, wars, political changes, religious changes so they are still around. What the conspiracy theorists do not understand is that if we had 20-30 conspiracy movements in ancient times, now we have 20,000-30,000. Hence the chase for the secret illuminatti society is futile - we are doomed.