The way I see it, it is similar to the issued raised with the aphorism Churchill paraphrased when he said: Indeed it has been said that democracy is the worst form of Government except for all those other forms that have been tried from time to time.so I agree the TGM theory is first set up as a strawman, asserting that it posited all events if import were tied to individuals.But I further think that since the contributions by lesser men and by common individuals are demonstrably less.The simple fact is in most (most, not all) fields of human endeavor, there extreme outlier individuals who are responsible for most of the achievement and advances.Are they replaceable? Are Plato, Socrates, Pericles, Sophocles, Alexander, Caeser, Putative Jesus or more to the point, Paul, Genghis, Chaucer, Alfred, Luther, Michelangelo, Mozart, Marx, (as someone mentioned above) Hitler, Mao, Salk etc ect replaceable? Some probably not, several probably yes. But replaceable with what? They are replaceable only with other extreme outlier individuals.Excelling and moving history (for good or bad) or culture is something certain very rare type does. Yes humanity, the human being, is a being of specialization, so we can assert a interdependency in any organized society. Someone had to farm Caesar's food. Some soldiers in Alexander's army had to run out and front and die. But those interchangeable were were not going to be Caesar or Alexander.