[shkkmo]

> Optimizing for non-sex factors, you would expect the selected lineup to more or less match the proportions of notable men and women in the space. If that holds true, then the issue is much further up the line in this case

Except that is not the case. There are disproportionately more male speakers than there are male PHP developers.

> Do we cancel future events solely on this premise? Seems like a terrible idea to me.

The events were not directly canceled due to a lack of diversity, but due to a complete lack of effort to solicit a diverse range of submissions.

The organizers have committed to making an effort in future years.