In the light of the latest we have to say they were right. They had some really good ideas for optimizing resources too so be sure they get credit. We still need to move fast though with oil running out in 40 years on the guess and population 6 billion. But my mind is trained to say, ok they knew BUT HOW DID THEY KNOW AND WHY WASN'T THIS BROUGHT TO US BEFORE
The Vatican is a good ally to determine such things.