If we grow in length significantly in the coming millennia will we reach the height of 3m / 10ft? Not quite. We have become taller because of the nutritious food, the consumption of dairy products and the control by consultation agencies. Our genes probably had a smaller amount of input. Natural selection plays a small role compared to the increasing quality of the environment. We should rather think of millimeters than centimeters. In addition the body-length trend, seen at a greater time period, is less unambiguous than that of our brain size. It's not that we've only grown bigger and bigger during evolution. Moreover, evolution has certain limitations. Just growing to the size of a giraffe is not that simple. If we continue to grow our skeleton will no longer be sufficient. Furthermore a hunchback giant is most probably unattractive. To grow longer we must also grow in width. It's therefore not likely we will see a significant growth in length.

Another point of discussion is the one about body hair. The present person is much balder than his predecessors. If that trend continues then we will lose our body hair around the armpits and pubic region. Therefore people in the future should prefer less hair. The trouble is we don't know how constant social preferences will be. Certain aspects that one generation finds attractive may be unattractive to other generations. Most predictions are probably unlikely to happen. In other words; if 10,000 years of breast hair is to be found attractive, the evolutionary development such as the trend of becoming less hairy might as well be eliminated.