Right, maybe I should have framed my comment a bit differently: this is not core functionality I would pay for.

Experiments are cool and it would be dumb to make suggestions about how they do R&D. I was more reacting to the thought that this would become part of the product offering.

Oof, that inspired me to check and mine's at 17%. I'm fine with experiments, too. (It reminds me of the old Google Labs part of search.)