Oh wow, I didn't know that he changed his mind on that.
I found out today too, researching him before writing the comment :P
I was still convinced he had the 4 days week at his new company as well.
There's a lot of bitterness in his words when he's asked why he backtracked, I don't believe he's being totally transparent about what happened, which is disappointing because he seemed a paragon of transparency "back in the days".
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We strive for transparency and don't collect excess data.