...ever figured out how to build even the simplest four-stroke rotary engine) we are on the same road to extinction that marks all highly successful species, the terminus of which appears again and again in the...our ancestors, take off like blazes up the evolutionary ladder. Anybody that has ever been menaced by a big dog on a lonely road knows the correct answer. It's not the opposable thumb, an upright stance, or a large brain. It's the simple ...