This is a disappointingly bad article from a world class lawyer. 

1. Damore's memo IS scientific. His general statistical statements about sex differences are backed up with evidence and he provides citations in the memo itself. There is a body of evidence concluding that pre-natal testosterone shapes differences between those with more (men, usually) and those with less (women, usually) that last throughout our lives. 

2. Damore goes out of his way to state unequivocally that there is so much overlap in the distribution of traits between males and females that the statistics *cannot* be used to judge any individual male or female. Any individual male or female could lie anywhere on the distribution so prejudicial attitudes toward individuals based on the distributions are wrong. Damore argues this clearly at the outset. 

3. Damore also states clearly that sexism IS a problem in the workplace and it should be addressed as well. 

No wonder Henein tells people not to read the memo.