Why are 'innovative' tech companies still struggling with diversity?

Technology might like to think of itself as the antithesis of the stuffy east coast old boys' network, but really it's just a reimagined, west coast version of it

The more diverse we are, the better we are at making smarter decisions. So why, oh why, is what should be our most innovative industry - technology - also our most homogeneous?

For decades, the research has been demonstrating the advantages of diversity. It isn't just that people from a variety of backgrounds bring different kinds of information and ways of thinking to the table, it's the fact that when we have to deal with people who aren't just like us, we ourselves do better: we do our homework more rigorously, we bolster our arguments more thoughtfully, we may prepare ourselves for a more lengthy process of reaching a conclusion.