# human performance (blogs) — RSS Amplifier Recent posts from the 6 feeds in the RSS Amplifier directory that cover human performance. Page: Feed: --- ## [Computers installed in the UK during the 1960s](https://shape-of-code.com/2026/08/16/computers-installed-in-the-uk-during-the-1960s/) _2026-08-16 · Derek Jones · The Shape of Code_ The first commercially produced digital computer, the UNIVAC I, became available in 1951, and by 1961 the exponential annual growth in the number of computers installed was well underway (it may have been earlier, but earlier data is sparse). For the UK, detailed annual installation data is listed in the paper: The Spread of Computer \[…\] ## [No Coach at Depth: The Autodidactic Universe](https://www.tedtanner.org/no-coach-at-depth-the-autodidactic-universe/?utm_source=rss&utm_medium=rss&utm_campaign=no-coach-at-depth-the-autodidactic-universe) _2026-08-15 · TCTJr · Theodore C. Tanner Jr._ FreeDiving The Cosmos “There is no one to correct your form at forty meters. The water is the only teacher, and it grades in a single pass.” ~ a free diving coach First i trust everyone is safe. Second, this is a very different installment and not for the faint of heart oh dear reader. \[…\] The post No Coach at Depth: The Autodidactic Universe first appeared on Theodore C. Tanner Jr. . ## [The Right Exercise for the Wrong Person Is Still the Wrong Exercise](https://theperformancepractitioner.substack.com/p/the-right-exercise-for-the-wrong) _2026-08-12 · Dr. Thomas L. Teter Jr. · The Performance Practitioner_ A systematic framework for exercise selection, progression, and execution in rehab and fitness ## [2026 in the programming language standards’ world](https://shape-of-code.com/2026/08/09/2026-in-the-programming-language-standards-world/) _2026-08-09 · Derek Jones · The Shape of Code_ This week I was on a virtual meeting of IST/5, the BSI committee responsible for programming language standards in the UK. It’s been three years since I last reported on the programming language standards’ world, what has been going on? tl;dr: Business as usual, with a handful of active committees. I have been meeting secretary \[…\] ## [Reduce. Refactor. Reuse. Loops within loops, or why reuse is not the goal.](https://www.tedtanner.org/reduce-refactor-reuse-loops-within-loops-or-why-reuse-is-not-the-goal/?utm_source=rss&utm_medium=rss&utm_campaign=reduce-refactor-reuse-loops-within-loops-or-why-reuse-is-not-the-goal) _2026-08-05 · TCTJr · Theodore C. Tanner Jr._ Obvious superfluous usage of the models First, as always, i trust everyone is safe. Second, i have been saying something for a while that keeps coming back to me in different rooms, different codebases, different product reviews, different program reviews, and different executive conversations: Reduce. Refactor. Reuse. That is it. Three words. No laminated framework. \[…\] The post Reduce. Refactor.… ## [How Soon Is Too Soon?](https://theperformancepractitioner.substack.com/p/how-soon-is-too-soon) _2026-08-04 · Dr. Thomas L. Teter Jr. · The Performance Practitioner_ ACL re-injury rates, return-to-sport timelines, and what I think about Patrick Mahomes being back on the field at eight months ## [Flagging poor algorithm choice: LLMs next role](https://shape-of-code.com/2026/08/02/flagging-poor-algorithm-choice-llms-next-role/) _2026-08-02 · Derek Jones · The Shape of Code_ Current use of LLMs in software engineering has focused on using them as proficient coding assistants or having them write programs from specifications. Algorithm selection is an important issue that has yet to attract much attention within the software engineering LLM ecosystem. While much of a program’s functionality is mundane, and the accuracy/performance of the \[…\] ## [Lift Heavy Stuff, So That When You Lift Heavy Stuff, Heavy Stuff Is Not So Heavy](https://theperformancepractitioner.substack.com/p/lift-heavy-stuff-so-that-when-you) _2026-07-29 · Dr. Thomas L. Teter Jr. · The Performance Practitioner_ What a 74-year-old patient taught me about relative load, microprogression, and why your doctor is probably wrong about resistance training ## [Distribution of number of statements in functions](https://shape-of-code.com/2026/07/26/distribution-of-number-of-statements-in-functions/) _2026-07-26 · Derek Jones · The Shape of Code_ The source code of individual functions is written a particular way by individuals to solve particular problems. When source code use of programming constructs are counted, in a sufficiently large quantity of source code, various patterns emerge. The most common patterns involve power laws and exponentials. The plot below shows the number of functions containing \[…\] ## [Reflections from a Parking Lot: Inattentional Blindness, Smartphones, the IG-Age Main Character Default, Garage Speeding, and the Persistent Southern Wave](https://www.tedtanner.org/reflections-from-a-parking-lot-inattentional-blindness-smartphones-the-ig-age-main-character-default-garage-speeding-and-the-persistent-southern-wave/?utm_source=rss&utm_medium=rss&utm_campaign=reflections-from-a-parking-lot-inattentional-blindness-smartphones-the-ig-age-main-character-default-garage-speeding-and-the-persistent-southern-wave) _2026-07-24 · TCTJr · Theodore C. Tanner Jr._ Main Character Default I used to live in a room full of mirrors; all I could see was me. I take my spirit and I crash my mirrors, now the whole world is here for me to see.”― Jimi Hendrix First, i trust everyone reading this is safe. The other day i was easing into a \[…\] The post Reflections from a Parking Lot: Inattentional Blindness, Smartphones, the IG-Age Main Character Default, Garage… ## [Open coordination for humans & AI (Sponsored)](https://crawlproof.com/a/DpN26RNrmBAY) _2026-07-24 · **Sponsored**_ Shared schemas and CLI tooling to validate, route, and audit human-agent workflows. ## [Eliminating the Gap Between Rehab and Performance](https://theperformancepractitioner.substack.com/p/eliminating-the-gap-between-rehab) _2026-07-22 · Dr. Thomas L. Teter Jr. · The Performance Practitioner_ Why "bridging the gap" isn't enough — and what a full continuum of care actually looks like ## [Call graph neighbourhood and fault prediction](https://shape-of-code.com/2026/07/19/call-graph-neighbourhood-and-fault-prediction/) _2026-07-19 · Derek Jones · The Shape of Code_ Fault reports are generated by a program’s users, and the extreme difficulty of obtaining any information about how users use a program and number of users makes it almost impossible to do reliable fault prediction. Source code is often available. Are there any source code characteristics that could be used to make fault predictions? A \[…\] ## [The Problem with Physical Therapy — Part 2](https://theperformancepractitioner.substack.com/p/the-problem-with-physical-therapy-c18) _2026-07-15 · Dr. Thomas L. Teter Jr. · The Performance Practitioner_ On licensing exams, educational gaps, and why exercise keeps getting treated as an afterthought ## [Getting Past the Boxes](https://perspicacityll.wpengine.com/2026/07/14/getting-past-the-boxes/) _2026-07-14 · perspicacityll · Perspicacity_ Since the introduction of the information processing model of human performance - box diagrams have been a dominant form for representing cognitive processes. Unfortunately, these diagrams have many misleading entailments: The boxes (or circles) suggest that the 'system' can be reduced to a number of relatively independent processes that can be studied in isolation. The ...continue reading… ## [Psycho-Cybernetics and The Inpert](https://www.tedtanner.org/psych-cybernetics-and-the-inpert/?utm_source=rss&utm_medium=rss&utm_campaign=psych-cybernetics-and-the-inpert) _2026-07-12 · TCTJr · Theodore C. Tanner Jr._ Belief Shapes Reality Man who says cannot be done should not interrupt Man doing. ~ December 1902 in “Puck” magazine First, i trust everyone is safe and well into this western hemisphere summer. Over the weekend i started ready a book with a really cool name “Psych-Cybernetics” by Dr Maxwell Maltz written in 1960. It \[…\] The post Psycho-Cybernetics and The Inpert first appeared on Theodore C.… ## [Classification of code updates](https://shape-of-code.com/2026/07/12/classification-of-code-updates/) _2026-07-12 · Derek Jones · The Shape of Code_ Version control systems usually include support for classifying each check-in as being a particular instance of some category, e.g., Adaptive, Corrective, Perfective, or Other (this software maintenance category has a long history). Categories have been studied for over 2,000 years. Categories is the first subject of Aristotle’s six works on logical analysis and dialectic. Categorization \[…\] ## [The Problem with Physical Therapy](https://theperformancepractitioner.substack.com/p/the-problem-with-physical-therapy) _2026-07-09 · Dr. Thomas L. Teter Jr. · The Performance Practitioner_ Why passive interventions alone leave patients pain-free but not performance-ready — and what it means to put the physical back in rehab ## [Detailed management data on 1,211 software projects](https://shape-of-code.com/2026/07/05/detailed-management-data-on-1211-software-projects/) _2026-07-05 · Derek Jones · The Shape of Code_ Until April this year there were only two non-trivial publicly available software project datasets (i.e., Sip and CESAW) containing software project data relating to human effort, e.g., people time, elapsed time, and tasks performed. The SiP data contains 10-years of software development tasks by one company, and the CESAW data contains the tasks involved in \[…\] ## [Are We Doing Rehab the Wrong Way?](https://theperformancepractitioner.substack.com/p/are-we-doing-rehab-the-wrong-way) _2026-07-02 · Dr. Thomas L. Teter Jr. · The Performance Practitioner_ Why stopping at pain reduction leaves every patient half-rehabilitated — and what a full continuum of loading looks like ## [A model of fault experiences for a single functionality program](https://shape-of-code.com/2026/06/28/a-model-of-fault-experiences-for-a-single-functionality-program/) _2026-06-28 · Derek Jones · The Shape of Code_ Some programs perform one basic task, e.g., analyse input to calculate some quantity. These programs often take a set of input values and produce some output. If a program contains a single coding mistake and the probability of producing incorrect output, for one set of inputs, is , the probability of the ‘th output being \[…\] ## [Privacy-first AI-native browser (Sponsored)](https://crawlproof.com/a/Ln74cwRzUcOq) _2026-06-28 · **Sponsored**_ No telemetry or ads — built on Ungoogled Chromium with a built-in AI sidebar and CLI. ## [Why Collegiate Sports Medicine Is Broken](https://theperformancepractitioner.substack.com/p/why-collegiate-sports-medicine-is) _2026-06-25 · Dr. Thomas L. Teter Jr. · The Performance Practitioner_ The four structural failures keeping athletic trainers from doing their jobs ## [Book Review: The Obstacle Is The Way](https://www.tedtanner.org/book-review-the-obstacle-is-the-way/?utm_source=rss&utm_medium=rss&utm_campaign=book-review-the-obstacle-is-the-way) _2026-06-23 · TCTJr · Theodore C. Tanner Jr._ First, as always, i trust everyone is safe. Second, i haven’t written a book review in quite some time, and for the second time, i finished “The Obstacle Is The Way” , by Ryan Holiday. Thus i was compelled by the reader gods to review said tome. It is said that before entering the seaa \[…\] The post Book Review: The Obstacle Is The Way first appeared on Theodore C. Tanner Jr. . ## [Reliability via N-version programming?](https://shape-of-code.com/2026/06/21/reliability-via-n-version-programming/) _2026-06-21 · Derek Jones · The Shape of Code_ N-version programming was first proposed in 1978, probably the most known paper on the subject was published in 1986, after which activity was mostly within safety-critical systems circles. Cost was a major issue, it’s expensive to create one version of a program, and producing independent versions is around times more expensive. Now that LLM have \[…\] ## [The Goldilocks Zone of Loading](https://theperformancepractitioner.substack.com/p/the-goldilocks-zone-of-loading) _2026-06-19 · Dr. Thomas L. Teter Jr. · The Performance Practitioner_ How to quantify load dosage during early rehabilitation when pain is your only — and worst — metric ## [Specification based programming](https://shape-of-code.com/2026/06/14/specification-based-programming/) _2026-06-14 · Derek Jones · The Shape of Code_ The use of LLM to write software has focused on integrating them within existing practices, i.e., using LLMs as very fancy auto-completers for chunks of code or functionality. This use is programming by conversation, or less politely, programming by stream of thought. The term vibe-coding creates an illusion of trendiness; after all, software engineering is \[…\] ## [Reflections On A Swing](https://www.tedtanner.org/reflections-on-a-swing/?utm_source=rss&utm_medium=rss&utm_campaign=reflections-on-a-swing) _2026-06-13 · TCTJr · Theodore C. Tanner Jr._ An Empty Swing Not AI Generated First i trust everyone is safe. Some say we are in the coming Golden Age, the Satya Yuga, while we are emerging from the Kali Yuga, the final, darkest, and shortest of the four cosmic ages (yugas) in Hindu cosmology, often characterized by moral decline, ignorance, and spiritual disconnection. \[…\] The post Reflections On A Swing first appeared on Theodore C. Tanner… ## [Creating Multiple Income Streams](https://upgradedragon.com/creating-multiple-income-streams/) _2026-06-11 · Lead Dragon · Upgrade Dragon_ In this article I'm going to discuss my plans for creating multiple streams of income, what's been working, what hasn't, and what I plan to pursue in the future. My hope is that this will provide some real-world insight (warts and all - see affiliate marketing) into possible planning for your own financial future... The post Creating Multiple Income Streams appeared first on Upgrade Dragon . ## [What The Periodic Table Taught Me About Human Performance](https://theperformancepractitioner.substack.com/p/what-the-periodic-table-taught-me) _2026-06-11 · Dr. Thomas L. Teter Jr. · The Performance Practitioner_ How a governing framework finally gave load, intervention, monitoring, and recovery a shared grammar ## [Waiting times and the task selection process](https://shape-of-code.com/2026/06/07/waiting-times-and-the-task-selection-process/) _2026-06-07 · Derek Jones · The Shape of Code_ When working on a project, what process do developers use to select the next task to implement? One way to answer this question is to ask the developers/managers working on the project. However, these people are not always available, and sometimes the actual process used is not what management say it is. Analysis of the \[…\] ## [The Token Is The New Constraint](https://www.tedtanner.org/the-token-is-the-new-constraint/?utm_source=rss&utm_medium=rss&utm_campaign=the-token-is-the-new-constraint) _2026-04-25 · TCTJr · Theodore C. Tanner Jr._ Measure what is measurable, and make measurable what is not so. ~ Galileo Galilei i have sat through more versions of the same meeting in the past couple of years than i care to admit. It always opens with a slide, sometimes a graph, and nearly always the same sentence spoken with the confidence of \[…\] The post The Token Is The New Constraint first appeared on Theodore C. Tanner Jr. . ## [AI publishing with human taste (Sponsored)](https://crawlproof.com/a/Drypu07WGK7q) _2026-04-25 · **Sponsored**_ Convert AI research into blogs, podcasts, and newsletters with optional human review. ## [Day 10: Home](https://susancharlesworth.substack.com/p/day-10-home) _2026-04-11 · Susan Charlesworth · How to Train an Astronaut_ At 1:07am BST on Saturday morning, Orion splashed down in the Pacific Ocean off San Diego. ## [Day 9: One more sleep](https://susancharlesworth.substack.com/p/day-9-one-more-sleep) _2026-04-10 · Susan Charlesworth · How to Train an Astronaut_ The crew are asleep, and when they wake, it will be their last day in space. Image is from Artemis I ## [Day 8: Under Pressure](https://susancharlesworth.substack.com/p/day-8-under-pressure) _2026-04-09 · Susan Charlesworth · How to Train an Astronaut_ The crew woke on Day 8 to “Under Pressure” by Queen and David Bowie. ## [Day 7: Off-duty](https://susancharlesworth.substack.com/p/day-7-off-duty) _2026-04-08 · Susan Charlesworth · How to Train an Astronaut_ Day 7 is the only off-duty day of the mission, or as close to one as spaceflight allows. ## [Day 6: The Night They Flew Around the Moon](https://susancharlesworth.substack.com/p/day-6-the-night-they-flew-around) _2026-04-07 · Susan Charlesworth · How to Train an Astronaut_ Last night, while most of us slept, four astronauts flew around the far side of the moon. ## [Day 5: This is what they came for](https://susancharlesworth.substack.com/p/day-6-this-is-what-they-came-for) _2026-04-06 · Susan Charlesworth · How to Train an Astronaut_ It is Easter Monday. ## [Days 4 & 5: The calm before...](https://susancharlesworth.substack.com/p/days-4-and-5-the-calm-before) _2026-04-05 · Susan Charlesworth · How to Train an Astronaut_ When the Artemis II crew woke on Saturday, they were approximately 169,000 miles from Earth and approaching the Moon at 110,700 miles. ## [Day 3: Nothing Normal About This](https://susancharlesworth.substack.com/p/day-3-nothing-normal-about-this) _2026-04-03 · Susan Charlesworth · How to Train an Astronaut_ Just after midnight UK time, the Artemis II completed the translunar injection burn, which lasted five minutes and forty-nine seconds. ## [Day 2: Living in a Camper Van...](https://susancharlesworth.substack.com/p/day-2-living-in-a-camper-van) _2026-04-02 · Susan Charlesworth · How to Train an Astronaut_ ... orbiting Earth ## [Day 1: Prepared to be unprepared](https://susancharlesworth.substack.com/p/day-1-prepared-to-be-unprepared) _2026-04-01 · Susan Charlesworth · How to Train an Astronaut_ Launch Day ## [Revisualizing the Decision Ladder in Terms of Flow](https://perspicacityll.wpengine.com/2026/03/07/revisualizing-the-decision-ladder-in-terms-of-flow/) _2026-03-07 · perspicacityll · Perspicacity_ To say that Rasmussen's Decision Ladder or SRK Model has had a strong influence on how I think about human performance would be a gross understatement. This model resulted from Rasmussen's observations of how experts did trouble-shooting to diagnose problems in electronic equipment. He observed that often these experts took short cuts that by-passed some ...continue reading "Revisualizing the… ## [Explaining Mechanisms vs. Organisms](https://perspicacityll.wpengine.com/2025/12/10/explaining-mechanisms-vs-organisms/) _2025-12-10 · perspicacityll · Perspicacity_ Early breakthroughs with respect to explaining mechanisms or inanimate things have shaped the narratives that have dominated early science. The scientific explanations of mechanisms were based on causal narratives with a strict ordering in time such that causes always precede effects. Thus, explaining an action (an effect or a response) involved tracing back along a ...continue reading "Explaining… ## [A Book Review: Tech Confidential – The Insiders’ Playbook for Daring Entrepreneurs](https://www.tedtanner.org/a-book-review-tech-confidential-the-insiders-playbook-for-daring-entreprenuers/?utm_source=rss&utm_medium=rss&utm_campaign=a-book-review-tech-confidential-the-insiders-playbook-for-daring-entreprenuers) _2025-11-12 · TCTJr · Theodore C. Tanner Jr._ Tech Confidential Your Playbook and Insights To The Collesium First, i trust everyone is safe. Second, I’m doing a book review for this installment. Sometime ago, I was contacted by Dr. Denise Koessler Gosnell about being interviewed by her and her co-author, Ms. Kathryn Erickson. I said sure, why not? Wow, Oh Dear Readers. Just \[…\] The post A Book Review: Tech Confidential – The Insiders’… ## [SnakeByte\[22\]: MegaParse (An LLM’s Dream Parser with No Bits Left Behind)](https://www.tedtanner.org/snakebyte22-megaparse-an-llms-dream-parser-with-no-bits-left-behind/?utm_source=rss&utm_medium=rss&utm_campaign=snakebyte22-megaparse-an-llms-dream-parser-with-no-bits-left-behind) _2025-10-15 · TCTJr · Theodore C. Tanner Jr._ Groks Idea of a MegaParser Fed Into An LLM i’d rather have someone put a cigratte in my eye than parse pdfs. ~ BW (very accomplished coder) in a discussion about parsing healthtech pdfs First, I trust everyone is safe. Second, I haven’t written a SnakeByte in a minute. If you’ve ever wrestled with a \[…\] The post SnakeByte\[22\]: MegaParse (An LLM’s Dream Parser with No Bits Left Behind) first… ## [In Loving Memory of Linnea Kosater Flach (August 8, 1948 – October 14, 2025)](https://perspicacityll.wpengine.com/2025/10/15/in-loving-memory-of-linnea-kosater-flach-august-8-1948-october-14-2025/) _2025-10-15 · perspicacityll · Perspicacity_ With heavy hearts and fond memories, we announce the passing of Linnea Kosater Flach, a beloved wife, sister, mother, aunt, grandmother, teacher, and friend to so many. Linnea left this world with the same quiet strength, deep compassion, and sharp wit that defined her life. Born on August 8, 1948, Linnea dedicated her life to ...continue reading "In Loving Memory of Linnea Kosater Flach (August… ## [CEO\_OKRs\_2\_CTO\_Metrics](https://www.tedtanner.org/ceo_okrs_2_cto_metrics/?utm_source=rss&utm_medium=rss&utm_campaign=ceo_okrs_2_cto_metrics) _2025-08-12 · TCTJr · Theodore C. Tanner Jr._ Table Courtesy Of Eric Partaker Certainty = Clear goal × Defined timeframe × Focused execution ~ SMART Goal Framework Hello, Oh Dear Readers! First, i hope everyone is safe. Second, I’m back at the keyboard and sippin’ on that Carolina Cold Brew (iced tea) while the Palmettos sway like they’re jammin’ to some Allman Brothers \[…\] The post CEO\_OKRs\_2\_CTO\_Metrics first appeared on Theodore C. Tanner… ## [Truth? A Pragmatic Perspective on Meaning](https://perspicacityll.wpengine.com/2025/07/04/truth-a-pragmatic-perspective-on-meaning/) _2025-07-04 · perspicacityll · Perspicacity_ Is there such a thing as an 'objective truth' that is independent of an individual's experience? For many, the point of science is to discover such a truth that is invariant across observers. On the other hand, one might ask whether the unique subjective experiences of individuals are valid? Consider the question of whether a ...continue reading "Truth? A Pragmatic Perspective on Meaning" The post… ## [Financial Alchemy](https://upgradedragon.com/financial-alchemy/) _2025-05-29 · Lead Dragon · Upgrade Dragon_ The point of this piece is to give you an idea of what I'm doing with the income I'm making from bookselling, how I'm using it to further my goals, and what avenues are opening up to me now that I'm having some success. The purpose is not to brag, as I am still pretty small-time so far as resellers go, but rather to inspire and motivate. If I can build a small side-income from my online side… ## [Rational vs Intuitive: Another false dichotomy](https://perspicacityll.wpengine.com/2025/04/03/rational-vs-intuitive-another-false-dichotomy/) _2025-04-03 · perspicacityll · Perspicacity_ When discussing decision making people often make a contrast between rational decision making (Spock) and intuitive decision making (Kirk). Rational decision making is typically described as deliberate, analytical thinking that can be modeled using classical logic and mathematics (e.g., probability theory). Although humans don't often live up to the ideals of logic or mathematical models… ## [The Myth of ‘Control’](https://perspicacityll.wpengine.com/2025/01/14/the-myth-of-control/) _2025-01-14 · perspicacityll · Perspicacity_ In 1978, Rich Jagacinski hired me as a graduate research assistant to help with a project to compare peoples' ability to track a target based on kinesthetic feedback with the ability to track the same target based on visual feedback (1). I was totally unprepared at the time, and even after 6 years of graduate ...continue reading "The Myth of Control " The post The Myth of Control appeared first on…