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Mathematical rigor(mortis) can sometimes be the enemy of conceptual clarity.

Czech Republic
Joined March 2012
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Neither quantum computers nor AI can send information faster than the speed of light. Quantum entanglement creates correlations between measurements, it cannot be used to transmit information. Anyone claiming otherwise either doesn't understand the physics or is misleading you
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Je tohle „prostě horké léto"? Data ukazují, že tak vysoké teploty by v minulosti byly prakticky nemožné. Jinými slovy, bez vlivu změny klimatu by nenastaly. Nová bleskově zpracovaná analýza vědeckého týmu World Weather Attribution ukazuje, jak velký podíl má na současné vlně veder v západní a střední Evropě změna klimatu. A týká se i nás: v Česku překonala rekordy tepelného stresu (WBGT – ukazatel kombinující teplotu a vlhkost, tedy zátěž, kterou tělo skutečně cítí) všechna analyzovaná města. Vědci porovnali dnešní klima (oteplení o ~1,4 °C) s klimatem před 23 lety (vlna veder 2003) a před 50 lety (1976): 👉 Denní teploty jako tento týden jsou dnes asi 10× pravděpodobnější než v roce 2003. (Všimněte si, jak rychle se mění podmínky. Nejde o rok 1850/1950, ale pouhých 23 let.) 👉 Horké tropické noci, kdy teplota neklesne pod 20 °C, jsou dnes více než 100× pravděpodobnější než v roce 2003. 👉 V klimatu roku 1976 by taková červnová vlna veder byla prakticky nemožná. Jinak řečeno: stejně vzácná vlna veder by byla v roce 1976 ve dne o 3,5 °C chladnější. To, co bylo dřív na samém okraji možného, je dnes blízko normálu. Analýza prověřila i možný vliv přírodní variability, konkrétně fenoménu El Niño – data jednoznačně dokládají, že na současnou vlnu veder vliv nemá. Hlavní hnací silou je spalování fosilních paliv, respektive nárůst koncentrací CO₂, který způsobuje. Denní teplotní maxima se přitom v Evropě oteplují zhruba třikrát rychleji než globální průměr. Proč na tom záleží: vedro zabíjí v Evropě víc lidí než všechny ostatní přírodní pohromy dohromady. V extrémním létě 2022 zemřelo v Evropě přes 60 000 lidí na následky veder — a 56 % těchto úmrtí jde přímo na vrub změně klimatu. A teploty dál porostou, dokud nepřestaneme spalovat fosilní paliva. Jak rychle to bude, rozhoduje o tom, na jak horké léto se Evropa – a my v Česku – budeme muset připravovat. Zdroj: World Weather Attribution (2026)
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Replying to @Kaju_Nut
The single time I have seen one of these guys accept a critique was a physician who came into our office at Columbia and offered $5,000 per hour to look at the theory that he had spent years in his basement developing. David Tong and Mark Jackson took him up on it. Turns out he had made a basic error in like the second equation that invalidated the entire rest of his life's work. They guy said thank you, paid them the five grand, and left.
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🚨 Joe Rogan and Duncan Trussell just broke down quantum entanglement in a way that's straight-up mind-bending. “There may be a tech in the future where there is no distance between two points. We might be able to travel instantaneously.” “I don’t know. How are you able to FaceTime me from Australia?” This idea hits different. What if we could erase distance completely? Do you think we'll see tech like this in our lifetime? How would instantaneous travel change your life and the world? Drop your thoughts below 👇
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Není tu někdo, kdo by chtěl být úplně prvním fakultním psychologem (psycholožkou) v republice? Kromě toho, že bude super samotná pozice, tak je hlavně skvělá naše @MUNI_FSS 🙂 A navíc na vás čeká (v naší přeplněné budově) vlastní kancl. To chcete!
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Disagree. Anyone listening to me will get a far more accurate picture of what is actually going on in fundamental physics than anyone listening to you
Replying to @ericweinstein
I'm sorry. We have no right to mislead the world as experts as to what happened. Anyone listenting to you would have no idea, whatsoever, what is actually going on. None. Zero. The problem is 100% our leaders. Our reviewers. Our peers. I'm just no longer willing to lie to protect the field. The problem is the leaders Martin. Not some obscure physicist or two, who maybe once or twice said something dumb over coffee in 1987. It’s 42 years of non-stop derailment of physics by the leaders…of physics.
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A view from our international partners on the current disaster in U.K. science and its long lasting damage to our international reputation (if not fixed immediately). researchprofessionalnews.com…
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Trying to plan R&D for long term scientific projects in the current funding environment
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My thoughts on #1stProof Problem 6 (closely related to areas I've worked in): OpenAI’s solution is essentially correct, and the difficulty feels consistent with AI capabilities over the past several months. More detail in the thread.
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When Einstein and his wife Elsa visited the world’s largest telescope at Mount Wilson Observatory, someone explained that Hubble had used this telescope to discover the size and shape of the universe. Elsa replied, “Well, my husband does that on the back of an old envelope.”
what's the hardest quote of all time?
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One does not simply... eliminate 🇨🇿 Viktoria Plzen.
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Math is a skill— like music or sports. Yet somehow, it's treated it differently. We’d never accept anti-practice attitudes in other domains, so why do we tolerate it in math? Here's @AlexKontorovich talking about this in my latest podcast episode. Link to full episode below.
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Replying to @CERN
@CERN poprvé v historii sráží na Velkém hadronovém urychlovači protony s jádry kyslíku! Dříve již probíhaly srážky protonů s jádry olova. I tato data nám pomohou pochopit podstatu hmoty, počátky vesmíru a kosmické záření! 😍 Později nás čeká ještě kyslík-kyslík!
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[Press Release] CERN welcomes Slovenia as its 25th Member State On 21 June 2025, Slovenia became a Member State of CERN Find out more: home.cern/news/press-release…
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Won’t somebody let me in!
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Even if you don't care one bit about scientific research, it's important to recognise the value of publicly funding people working on very hard problems and training bright young minds on how to solve them. Do you think it’s a coincidence that so many successful entrepreneurs have a science background? The US didn’t become a global leader in technology and innovation by accident. It got there through decades of public investment in science, building research groups where young people could throw themselves at the toughest questions we face. Today, 49% of US unicorn CEOs hold STEM degrees, and 70% of founding teams include at least one person with a STEM background. That pipeline of innovation was forged in universities and national labs, not in boardrooms And when research is sustainably funded, the best international students come to US universities, and stay to build their companies (Elon Musk is one of them). Over 50% of international students in the U.S. are in STEM fields. Do you think this will continue if their research funding collapses by >70% and they can be kicked out at any time because the current government picks a fight with their University? In the 21st century, attracting smart young people is the most valuable resource any nation can have today. In the future it will become even more critical. Scientific research is one of the strongest magnets for talent. You can ignore it, but the US is dismantling one of its most powerful engines of innovation
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Bundesregierung stuft Atomkraft künftig als nachhaltig ein to.welt.de/hy3vRJr
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Are you a PhD graduate in the Life Sciences, Physics, Chemistry, Earth Science, Math or Computer Science? Apply for the Max Planck-Weizmann Joint Postdoctoral Program. Includes a fully funded four-year position, split equally between these two esteemed institutions >>

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lol humans
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