Ask HN: Video talk about leveraging unconscious mind for problem solving?

At some point between about 2011 and 2015 I found on HN a recommendation for an unusual tech talk (probably a keynote). I've been wanting to find it again for several reasons and have tried several times to no avail, so now I'd like to try asking for your help with it.

The (male) speaker de-emphasized coding as such and framed the activity as "solving problems", especially hard problems, and went on present motivations for a series of stages (about 4-5) to improve chances for getting the insights and ideas needed. Some of the stages were roughly:

- Step away from the computer Think about the problem. Write and draw about the problem. Engage intensely with it to load it into your unconscious/background mind.

- Stage with "gestation" or "incubation" of ideas. Letting the brain work away at it in the background. Relaxation, quite possibly something about getting exposure to new impressions which can work as building blocks and inspiration for a solution.

- "Unplug" - eliminate distractions while working on the solution. For instance, get rid of background music, keep sounds and interruptions from your colleagues to a minimum.

He possibly suggested "How To Solve It" by Polya and a couple of similar books at some point. He possibly advocated for intermittently reading research papers and other texts with complex ideas which had taken a lot of work to develop, even if only partially understanding them, again as a sort of building blocks for new ideas and insights.

Do you recognize this?