Inside every call for Diversity lies a logical flaw that makes me want to scream! I can see it plain as day, why can't you?
Racism and sexism are examples of Collectivism, which is the logical error of ascribing greater importance to collective properties than to individual properties. It is an error because collective properties are emergent from the individual properties. A collective is merely a fiction, a figment of the imagination for analyzing the individuals, which are real. As theories must conform to reality, but not the other way around, so may collective properties be used to humbly suggest reality, but must instantly yield when contradicted by a single fact about a real individual. It is all well and good to claim that dogs have four legs, but only a fool would insist that a three legged dog actually had four legs because it was a dog and dogs have four legs. Yet the same logical mistake arises in more subtle cases, causing all too many people to fall prey to confusion.
The progressive movements of the 50s through the 70s argued against racism and sexism, rightfully demanding that people be judged by their individual qualities instead of their group memberships. On the strength of this argument outlying groups demanded institutional access for their members. Policies based on collective properties were derided as examples of stereotyped, invalid thinking.
By the 1990s this progressive philosophy had so decayed that it had devolved into an argument for exactly its logical contradiction. Now members of outlying groups were said to possess alternate "ways of seeing", making their inclusion especially valuable to institutions. The problems with this are legion.
Firstly, this is a reemergence of classical collectivist thinking, and it is just as logically invalid as it was when applied to defend Jim Crow. It is once more an invocation of collective properties which, in fact, may or may not exist in the individual in question. Race and gender are fictitious categories! What statements can be made about all people of a particular ethnicity or gender? To be precise: none. What then is the use of such a concept? If the members don't actually share any common trait, what situation could call for one of these categories? None.
Secondly, it provides ammunition for regressive policy. If women really have a different way of seeing, perhaps it's a way of seeing that finds mathematics especially difficult. Once the camel's nose is back in the tent, I can once more refuse to hire a woman because she is a woman.
Thirdly, in real policy it is often used to mask alarming ideas. Without the kindly disguise of "diversity", these statements if spoken plainly would be immediately recognized as appalling. For instance, it is abominable to assume a person is poor simply because they're black, yet it's acceptable to call for affirmative-action based exactly on the same assumption.
And finally, collectivism is degrading to me! It says that my most valuable and interesting characteristics are those based on my genitals, skin color, heritage, and social background -- instead of my accomplishments and experiences which I and I alone possess. Collectivism can only be the refuge of losers who quietly feel unworthy, who are resigned to the reflected glow of others.
Now here we have the sad spectacle of a video of speakers at a conference, but instead of paying attention to the interesting topics they are discussing, it counts their penises and vaginas. And it is linked to a larger discussion with far too many people all discussing the Office 2.0 conference, counting the penises and vaginas of the speakers therein, and finding a discrepancy in the ratio. The situation was rectified when more vaginas were invited to speak. (Oh, doesn't that sound so insulting? To label a person by their genitals? But that's exactly what they did by inviting -- or rejecting -- speakers on that basis.)
If you want interesting people at a conference, who have unorthodox ways of thinking and fresh approaches, then find them! I can name a dozen people with varied races and genders but very similar perspectives -- and I can name a dozen more people who all look alike yet represent an extreme diversity of viewpoint. And I think you can too!
People with self-esteem instinctively reject the patronizing objectification of special treatment in any sphere. They feel a tightening sensation in their stomachs, and a flush of adrenaline when their individual distinctiveness -- of which they are proud! -- is ignored with a glassy-eyed gaze that recognizes only their grossest, least important, most superficial features.