Human Scientific Achievement is Greater Than the Magic of...

And Harry raced back up the stairs and shoved the staircase back into the trunk with his heel, and, panting, turned the pages of the book until he found the picture he wanted to show to Draco. The one with the white, dry, cratered land, and the suited people, and the blue-white globe hanging over it all. That picture. The picture, if only one picture in all the world were to survive. "That," Harry said, his voice trembling because he couldn't quite keep the pride out, "is what the Earth look...

 Two Sexes is Inefficient

Many fungi are sexual, but they do not have males. They have tens of thousands of different sexes, all physically identical, all capable of mating on equal terms. but all incapable of mating with themselves. Even among animals there are many, such as the earthworm, that are hermaphrodites. To 3e sexual does not necessarily imply the need for sexes, let alone for just two sexes, let alone for two sexes as different as men and women. Indeed, at first sight, the most foolish system of all is two...