“It took Man some 2,000,000 years to advance in his “tool industries” from the use of stones as he found them to the realization that he could chip and shape stones to better suit his purposes. Why not another 2,000,000 years to learn the use of other materials, and another 10,000,000 years to master mathematics and engineering and astronomy? Yet here we are, less than 50,000 years from Neanderthal Man, landing astronauts on the Moon.”
