As a Googler, I can confirm that this article is... completely wrong. I don't have to get approval to take 20% time, and I work with a number of people on their 20% projects. I can also confirm that many people don't take their 20% time. Whether it's culture change due to new hiring, lack of imagination, pressure to excel on their primary project, I'm not sure, but it is disappointing. Still, in engineering No permis…
What would make this a more durable statement is if you could say "I don't have to get approval to take 20% time, and I work with a number of people on their 20% projects. And my calibration scores are the not different than when I don't use my 20% time. " There is a reason the article talked to many ex-googlers because they are ones who, perhaps, left when there was a difference of opinion about their contribution t…
The policy of course is to not do that, but how would Google enforce that? If you spent 200% of your time on your primary project, you might get excellent reviews. Should you be calibrated 50% lower to normalize everyone? So yes, if you work 100% on your primary and +20% on your 20p, then you might get higher perf scores. Eh, if you have a good idea how to correct for that, go ahead, but it's a people problem and people are hard to deal with in these kinds of thing.
This is one reason why I actively encourage as many people to take their 20% time as possible. :)
My personal experience though is very positive regarding 20% time. My first project, I started, gathered a few contributors, built a prototype, pitched it and turned it into a full-fledged project. I got great reviews and promoted in large part because of that. In my second PA I work on open source projects. Less glamorous, and maybe less perf-impacting, but that's not my goal right now.
In general the people I've seen take 20% time in a focused way tend to be the higher-performers. They're more self-guided, more critical of problems that need to be solved, or use 20% time to teach themselves or move onto harder problems. Maybe as we've grown the percentage of employees like that has shrunk, maybe it takes a while to realize you have 20% time. Not sure, but I'd like to see it be used more, it's good for everyone.