Director of Curriculum and Instruction (Grades 6-12) focused on developing creative and flexible thinking. Whole Child Advocate. Ed. D. @SHUCEHS

Joined October 2010
50 Photos and videos
Sean Cronin retweeted
🚨 do you understand what scientists just did to deafness.. researchers injected a modified harmless virus directly into the cochlea the spiral cavity in your inner ear.. carrying a working copy of a gene called OTOF.. the gene that transmits sound signals from your ear to your brain.. without it, your ear hears everything.. your brain receives nothing.. 10 completely deaf patients.. single injection.. within weeks all 10 could hear.. 10 out of 10.. here's what nobody wants to say.. cochlear implants cost between $30,000 and $100,000 per patient.. hearing aids sell for up to $7,000.. the global hearing industry is worth over $9 billion a year.. every year.. recurring.. because deafness has never been cured.. just managed.. one injection ends all of that.. and in 2018 goldman sachs analysts literally wrote this in a report about gene therapy.. "curing patients is not a sustainable business model" that's a goldman sachs equity research note.. sent to investors.. warning them that companies developing one-time cures were a risky bet because cured patients stop buying products.. the science to fix single broken genes has existed in research labs for years.. the same platform used here already cured a form of blindness in 2017.. cured spinal muscular atrophy in babies in 2019.. there are over 10,000 known single-gene disorders.. millions of people labelled "incurable".. the platform exists.. the proof is 10 out of 10.. the question was never whether they could fix it.. it's whether fixing it was good for business.
BREAKING: An experimental gene therapy ear injection has cured deafness for 10 out of 10 patients in clinical trial.
Community note
The trial only treated patients with a rare genetic form of deafness caused by OTOF gene mutations (DFNB9), not all types of deafness, and improved hearing from profound (106 dB average) to moderate loss (52 dB average), not full restoration for all. nature.com/articles/s4159… sciencedaily.com/releases/2026/…
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Sean Cronin retweeted
Which is true. Kids do need knowledge. But the "science" crowd spent years dismissing teachers who said that. Now they're acting like they discovered it. If the science keeps moving every time it doesn't work, maybe it's not a science. Maybe it's a marketing cycle.
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RT @JonHaidt: I'm sure there's a role for tech in education (e.g., @khanacademy), but not as 1:1 devices on students' desks. I hope that…
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Sean Cronin retweeted
🚨BREAKING: OpenAI published a paper proving that ChatGPT will always make things up. Not sometimes. Not until the next update. Always. They proved it with math. Even with perfect training data and unlimited computing power, AI models will still confidently tell you things that are completely false. This isn't a bug they're working on. It's baked into how these systems work at a fundamental level. And their own numbers are brutal. OpenAI's o1 reasoning model hallucinates 16% of the time. Their newer o3 model? 33%. Their newest o4-mini? 48%. Nearly half of what their most recent model tells you could be fabricated. The "smarter" models are actually getting worse at telling the truth. Here's why it can't be fixed. Language models work by predicting the next word based on probability. When they hit something uncertain, they don't pause. They don't flag it. They guess. And they guess with complete confidence, because that's exactly what they were trained to do. The researchers looked at the 10 biggest AI benchmarks used to measure how good these models are. 9 out of 10 give the same score for saying "I don't know" as for giving a completely wrong answer: zero points. The entire testing system literally punishes honesty and rewards guessing. So the AI learned the optimal strategy: always guess. Never admit uncertainty. Sound confident even when you're making it up. OpenAI's proposed fix? Have ChatGPT say "I don't know" when it's unsure. Their own math shows this would mean roughly 30% of your questions get no answer. Imagine asking ChatGPT something three times out of ten and getting "I'm not confident enough to respond." Users would leave overnight. So the fix exists, but it would kill the product. This isn't just OpenAI's problem. DeepMind and Tsinghua University independently reached the same conclusion. Three of the world's top AI labs, working separately, all agree: this is permanent. Every time ChatGPT gives you an answer, ask yourself: is this real, or is it just a confident guess?
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Sean Cronin retweeted

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Sean Cronin retweeted
🧠 MIT recently completed the first brain-scan study on ChatGPT users—and the results are deeply revealing. Rather than boosting brain function, prolonged AI use may be dulling it. Over four months of cognitive data suggest we might be measuring productivity all wrong ā¤µļø In MIT’s study, participants had their brains scanned while using ChatGPT. → 83.3% of users couldn’t recall a single sentence they’d written just minutes earlier. → In contrast, those writing without AI had no trouble remembering. Brain connectivity dropped sharply—from 79 to 42 points. → That’s a 47% drop in neural engagement. → The lowest cognitive performance among all user groups. Even after stopping ChatGPT use in later sessions, these users showed continued under-engagement. → Their performance remained lower than those who never used AI. → This suggests more than dependency—it’s cognitive weakening. Beyond the scans, educators flagged the writing itself. → Essays were technically solid, but often called ā€œrobotic,ā€ ā€œsoulless,ā€ and ā€œlacking depth.ā€ Here’s the paradox: → ChatGPT makes you 60% faster at completing tasks… → But it reduces the mental effort required for learning by 32%. The top-performing group? → Those who began without AI and added it later. → They retained the best memory, brain activity, and overall scores. Using ChatGPT can feel empowering—but it may quietly offload your thinking. → You gain speed, but lose engagement. → You get answers, but stop learning how to think. The takeaway isn’t to avoid AI—but to use it intentionally. → Use it to assist, not replace your mind. → Build cognitive strength—not dependency. MIT’s early study on AI and the brain lays out the stakes. The way we use these tools matters more than ever.
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Sean Cronin retweeted
AI can predict 130 diseases from ONE night of SLEEP.
Artificial intelligence detects breast cancer 5 years before it develops #MedEd #MedTwitter #SCIENCE #technology #oncology #Cancer #Diagnosis
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Sean Cronin retweeted
Replying to @paulg
If this were a medical chart, the iPhone release would be labelled ā€˜onset’.
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Sean Cronin retweeted
Circadian rhythm dysfunction is highly prevalent in ADHD Up to ~75% of patients have delayed sleep and wake timing, and shifting the clock earlier is linked to symptom improvement I just published a paper on what this means for treatment. Here’s what we found 🧵1/12
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Sean Cronin retweeted
4 Dec 2025
The most dangerous addiction today isn't a substance. Research on 100,000 people confirms that heavy short-form video use is just voluntary cognitive decline. We are actively training our brains to fail at hard tasks. If you can simply sit with a problem for 10 minutes without swiping, you have a massive competitive advantage. Basically, boredom is the new IQ.
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Sean Cronin retweeted
How much of ā€œMississippi’s education miracleā€ is an artifact of selection bias? statmodeling.stat.columbia.e…

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Sean Cronin retweeted
There is more and more evidence that putting computers and tablets on students' desks (1:1 devices) was a terrible mistake. I agree with @AdamMGrant that "it's time to remove laptops [and tablets] from classrooms."
20 Nov 2025
It's time to remove laptops from classrooms. 24 experiments: Students learn more and get better grades after taking notes by hand than typing. It's not just because they're less distracted—writing enables deeper processing and more images. The pen is mightier than the keyboard.
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Sean Cronin retweeted
I was speaking at a school about the role of emotionally intelligent leadership, teaching, and learning. At the same time, outside a neighboring school, ICE officers stood with rifles. That image has stayed with me. It’s still unsettling—especially knowing what I know about child development. Fear in early life doesn’t just fade; it shapes the brain and rewrites a child’s sense of safety and belonging. If we truly care about children’s mental health, the people with the greatest power and influence must become as educated in child development and humanityĀ as they are in policy and enforcement. Because every child’s nervous system is taking notes.
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Sean Cronin retweeted
How Inquiry-Based Learning And The Curiosity Curve Can Fuel a Flourishing Democracy wegrowteachers.com/inquiry-b…
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Sean Cronin retweeted
The average price of electricity per Kilowatt-hour in the United States. This is unsustainable.
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Sean Cronin retweeted
29 Aug 2025
Sometimes the universe quietly cheers
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Sean Cronin retweeted
27 Aug 2025
Intelligence depends on more than cognitive horsepower. It requires cognitive flexibility. The faster the world evolves, the greater the cost of rigidity. Stubbornness is a path to getting trapped in the past. The future belongs to those with the courage to change their minds.
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Sean Cronin retweeted
Works for what though? There are more aspects to teaching and learning than the underlying assumption here of a change in long-term memory. That’s what seems to be missing from most of the loudest SoL advocates. Overly narrow and rigid.
The ecological fallacy is when predictions are made about individuals based on predictions made about the averages of groups. It’s like saying that, on average, men are taller than women therefore this man must be taller than that woman. I think many critics of the science of learning are operating under the ecological fallacy. The science of learning presents a series of best bets based on what works on average. Advocates don’t claim that each strategy will always work with every individual. And yet, when I read criticism of the science of learning, it often reads as if this is how it is being interpreted by critics. I wonder whether part of this misunderstanding comes from people who are not trained in science.
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