HeyJaredBetween Thinking and Doing
Where neuroscience meets execution. Writing about cognitive performance, executive function, and the tools being built for people who refuse to accept their limits.
- Indexed issues, last 90 days
- 17
- Latest publication
- Sep 29, 2026
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- Earliest in this view
- Aug 23, 2026
Latest issues
Trust the Answer Enough to Act: How Predictable Rules Help You Get Unstuck (opens the original)
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You want a clear answer about what to do next when you’re stuck. Research on automated decision tools finds that people rely on an answer they can predict and adjust.How Doctors Used a Three Question Decision TreeA patient arrives at the hospital with chest pain. A doctor must decide whether the patient goes to the coronary care unit or a regular nursing bed. Getting it wrong can cost a life.American doctors had a computer tool built for this exact decision, called the Heart Disease Predictive I
I Built an Emotional Cost Reducer, and It Got Me Recording a Voiceover I’d Dodged for Two Days (opens the original)
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There’s something you’ve been putting off all day.You’ve answered emails that could have waited, made coffee you didn’t want, and promised yourself you’d get to the thing that mattered after one more small job.It’s still sitting there.Your stomach drops a little every time you look at it.Mine these past couple of days was a voiceover. I wrote a chapter for a book on building with AI, and recording it meant hearing myself stumble, stop, and restart the same paragraph again and again. I put it off
Mental RAM: Why Your Second Brain Can’t Help You Mid-Task (opens the original)
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Your focused attention can keep about four things active at once, where a thing can be one small item or one familiar group of them. Only about 4, when a busy afternoon asks you to keep track of far more than that. For years, people quoted seven, from a famous 1956 paper by George Miller. Memory researcher Nelson Cowan later showed that was too high. Once you strip out the tricks people use to stretch it, the real limit is about four, a number he<a href="https://www.cambridge.org/core/journals/b
Meta’s Muse and xAI’s Grok Bot Remember You. Your Working Memory Still Needs Help. (opens the original)
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Two weeks ago, Meta launched a personal assistant called Muse. One way to talk to Muse is inside WhatsApp, an app already on about 3 billion phones. Muse isn’t a chatbot you ask questions. It connects to your email, your calendar, and your accounts. It does things for you like booking a trip and paying bills. What Meta pushes hardest is that Muse remembers. Tell it once that your sister can’t eat gluten, and it plans the dinner around her without being reminded.Grok Bot, which xAI released a few
I Built a Doomscroll Interceptor With Claude and iOS, and It Stops Me Before the Feed Even Loads (opens the original)
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You think the problem is that you lack the willpower to put your phone down. You’ve tried app timers, grayscale mode, and the phone-in-another-room trick. They work for a day, then you route around them, and you decide once again that the failure is yours.Willpower was never going to fix this. You open the app on autopilot, before you’ve decided anything, and there’s nothing there to stop you in that second. Earlier this week, I wrote about how Google’s Pause Point does th
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