I'm worried about human treachery & brutality

On Edge.com 151 top scientists, technologists, writers, and academics respond to the question "What Should We Be Worried About?"

Only five responses are indisputably about the man-woman-thing.

13. The dearth of desirable mates is something we should worry about, for "it lies behind much human treachery and brutality.” –David M. Buss, professor of psychology at U of T

33. Men. –Helen Fisher, biological anthropologist
 
84. The surplus of testosterone caused by a gender gap in China. –Robert Kurzban, psychologist

94. “We should worry about losing lust as the guiding principle for the reproduction of our species.” –Tor Norretranders, science writer

98. “What worries me is that the debate about gender differences still seems to polarize nature vs. nurture, with some in the social sciences and humanities wanting to assert that biology plays no role at all, apparently unaware of the scientific evidence to the contrary” -- Simon Baron-Cohen, psychologist

Although ADD and ADHD would be profitable on a global scale.

42. That Americans are homogenizing and exporting their view of a normal mind around the world. –P. Murali Doraiswamy, professor of psychiatry

It's not just semantics

THE RULES REVISITED: The difference "between" and the difference "among"

This plot illustrates how a random group of men or women might fall on a masculine-feminine scale – which can be thought of as the combination of a large number of character traits.  Notice that the difference between men and women with respect to the masculinity-femininity scale is actually smaller than the male or female variance on the same scale. Again, the difference among men or women is larger than the difference between them.

If you are thinking about or reading about the differences between the sexes, remember that, in most respects, the difference among is greater than the difference between.

His Normal Distribution Curve is different from hers

Is there anything good about men?
R. Baumeister, Eppes Eminent Professor of Psychology & Head of Social Psychology Area, Florida State University

the greater variablity theory holds that women and men are equally intelligent on average, but male intelligence has greater variability than female intelligence (see graph above), and therefore there are more male geniuses AND male idiots. To be sucessful at MIT in engineering and science, you have to be in the extreme right-hand tail of the distribution for intelligence, i.e. 3-4 standard deviations above average; and in the range of 3-4 standard deviations above the mean, women are underrepresented and men are overrepresented.