Mastery Notes
Short notes on what researchers actually found.
Each note works through a question about learning, leadership, performance, or mindset using the published research — the numbers, the caveats, and where the evidence stops. Sources are listed at the end of every one.
New releases
Why Screen Time Metrics Are Not Adequate Measures of Attention
Screen time counts minutes. It cannot tell you what those minutes were for — whether the phone was working as…
The Architecture of Attention
Focus is not only a matter of discipline. The environment around the work shapes where attention goes, and it can…
All notes
Why Screen Time Metrics Are Not Adequate Measures of Attention
Screen time counts minutes. It cannot tell you what those minutes were for — whether the phone was working as a tool, or as an interruption.
The Architecture of Attention
Focus is not only a matter of discipline. The environment around the work shapes where attention goes, and it can be redesigned.
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