On Sep 25, 2018, at 12:24 PM, Antoine Pitrou <antoine@python.org> wrote:

Le 25/09/2018 à 18:10, Guido van Rossum a écrit :
   To save us all trouble of discussing this particular issue, for
   those of you who disagree completely, and have other ideas about how
   you'd like Python to be governed and who should be in it, you can do
   one or more of the following:

   - not vote on my PEP
   - vote on the other PEPs
   - write their own PEP

I would remind people that it's well documented that diverse group make
better decisions.

Can you point us to such documentation?  It would be nice to know under
which conditions the assertion holds, according to which metrics, etc.

https://hbr.org/2016/11/why-diverse-teams-are-smarter includes links to several studies. There are a lot more results as well to the search “diverse teams make better decisions” or “diverse groups decision making” on Google as well if those studies are lacking to you.