Yah - Wozniak is fairly well known in the polyphasic community for having very strongly held views that are directly contradicted by the experience of polyphasic sleepers. See for example http://www.puredoxyk.com/index.php/2006/11/01/an-attack-on-polyphasic-sleep/.
I did not gather objective evidence of the differences in my cognition before and after polyphasic sleep, but any differences are small enough that they're invisible to me and those who live with me.
I think Wozniak is only evangelical about the Uberman schedule being a horrible idea. He states in his 2010 update that the Everyman 3-hour core sounds "pretty sustainable".
This is the public group instrumental rationality diary for the week of August 20th. It's a place to record and chat about it if you have done, or are actively doing, things like:
Or anything else interesting which you want to share, so that other people can think about it, and perhaps be inspired to take action themselves. Try to include enough details so that everyone can use each other's experiences to learn about what tends to work out, and what doesn't tend to work out.
Thanks to everyone who contributes!
Last week's diary; archive of prior diaries.