First, thanks to Harjeet for doing this.
The biggest question I had for a while about YC has already been answered. That is, how much does the educational background of an applicant impact the analysis of an application.
I know a few former and current YC founders and they all seem to have the same thing in common: CS degrees from elite universities.
Harjeet put my concerns to rest with his answer that it is only relevant if it directly relates to the problem being solved.
I'm sure a PhD in Machine Learning from Stanford doesn't go unnoticed even if the problem being solved is technically somewhat simple. However, it is nice to see that everyone is treated equally at least on paper.