Most recent unrolls from @ThreadReaderApp
Most people stop learning math after school.
Big mistake.
AI runs on math.
So does problem-solving, decision-making, and clear thinking.
Here's the roadmap I wish I had years ago:
Big mistake.
AI runs on math.
So does problem-solving, decision-making, and clear thinking.
Here's the roadmap I wish I had years ago:
1. Start with Algebra.
It's the foundation of everything that comes next.
Skip it, and higher math feels like random symbols.
Don't optimize for speed.
Optimize for clarity.
When each step makes sense, everything compounds from there.
📕Free resource:
The Organic Chemistry Tutor (YouTube)
Probably taught more people algebra than most schools.
It's the foundation of everything that comes next.
Skip it, and higher math feels like random symbols.
Don't optimize for speed.
Optimize for clarity.
When each step makes sense, everything compounds from there.
📕Free resource:
The Organic Chemistry Tutor (YouTube)
Probably taught more people algebra than most schools.
2. Equations aren't math problems.
They're cause-and-effect maps.
The faster you see relationships, the faster you solve problems.
Next: Geometry.
It's not about memorizing shapes.
It's about training your brain to see patterns everywhere.
They're cause-and-effect maps.
The faster you see relationships, the faster you solve problems.
Next: Geometry.
It's not about memorizing shapes.
It's about training your brain to see patterns everywhere.
Active Measures, though started in Tsarist Russia and perfected under Soviet rule, are still a very active part of Russia’s foreign influence playbook within the US today, a thread:🧵 
Russia’s active measures doctrine isn’t just propaganda.
It’s political warfare: covert, deniable operations meant to shape events by confusing, dividing, pressuring, or discrediting an adversary, all while hiding Moscow’s involvement.
It’s political warfare: covert, deniable operations meant to shape events by confusing, dividing, pressuring, or discrediting an adversary, all while hiding Moscow’s involvement.
The playbook: find a real fault line, build fake or front identities, launder a message through “independent” voices, amplify it until real people argue about it, then deny involvement.
The goal is often less “convince everyone” than “make trust collapse.”
Sound familiar?
The goal is often less “convince everyone” than “make trust collapse.”
Sound familiar?
🚨Monthly Solar Geoengineering Updates (May'2026)🚨
From Stardust’s SAI particle reveal to US Congress oversight calls, @ARIA_research funding, @UNEP report, EPRS governance briefing & UK public support for SRM research, key SRM headlines from May:🧵0/12
…largeoengineeringupdates.substack.com/p/monthly-sola…
From Stardust’s SAI particle reveal to US Congress oversight calls, @ARIA_research funding, @UNEP report, EPRS governance briefing & UK public support for SRM research, key SRM headlines from May:🧵0/12
…largeoengineeringupdates.substack.com/p/monthly-sola…
Top 10 SRM Updates from May 2026
1️⃣ Stardust reveals SRM particle design:
Company discloses 0.5µm amorphous silica–based particles & calcium carbonate core–shell variants, deployed at ~18km altitude, targeting up to ~1% solar reflection with monitoring & dispersal systems.
1/
1️⃣ Stardust reveals SRM particle design:
Company discloses 0.5µm amorphous silica–based particles & calcium carbonate core–shell variants, deployed at ~18km altitude, targeting up to ~1% solar reflection with monitoring & dispersal systems.
1/
2️⃣ US Congress requests @NOAA geoengineering briefing:
Lawmakers seek oversight on MCB & SRM research, citing governance gaps & transparency concerns.
2/
Lawmakers seek oversight on MCB & SRM research, citing governance gaps & transparency concerns.
2/
Does the brain always return to baseline after COVID?
A new multimodal MRI study suggests the answer may be - not always.
After infection, some brains may remain in a different network state - and we still do not know if that state is temporary, compensatory, or maladaptive🧵
A new multimodal MRI study suggests the answer may be - not always.
After infection, some brains may remain in a different network state - and we still do not know if that state is temporary, compensatory, or maladaptive🧵
The important part is not one single MRI finding.
The strength of this study is that it combines three MRI layers
structural MRI - grey matter volume,
diffusion MRI - white-matter microstructure,
resting-state fMRI - functional connectivity.
The strength of this study is that it combines three MRI layers
structural MRI - grey matter volume,
diffusion MRI - white-matter microstructure,
resting-state fMRI - functional connectivity.
The study included 76 people recovered from COVID-19 and 51 healthy controls.
The authors looked at the whole recovered group, and then stratified COVID participants by severity
non-hospitalized vs hospitalized.
That matters, because some effects only became visible when severity was taken into account.
The authors looked at the whole recovered group, and then stratified COVID participants by severity
non-hospitalized vs hospitalized.
That matters, because some effects only became visible when severity was taken into account.
@marcuslemonis @LouBasenese @SpaceX @elonmusk The free market is not always what sets the SP. I'm sure you are well aware of OSTK history...
@marcuslemonis @LouBasenese @SpaceX @elonmusk free market...
@marcuslemonis @LouBasenese @SpaceX @elonmusk free market..
مهمترین قانون هر رابطه اینه:
کسی که کمتر به رابطه نیاز داره، قدرت بیشتری داره و فرقی نمیکنه این رابطه عاشقانه باشه، خانوادگی یا کاری.
هر جا دو نفر به هم وابسته باشن، این اصل در پسزمینه در حال کار کردنه.
رشته توییت /
کسی که کمتر به رابطه نیاز داره، قدرت بیشتری داره و فرقی نمیکنه این رابطه عاشقانه باشه، خانوادگی یا کاری.
هر جا دو نفر به هم وابسته باشن، این اصل در پسزمینه در حال کار کردنه.
رشته توییت /
۲/ خیلیا از شنیدن کلمه «قدرت» ناراحت میشن و فکر میکنن منظور سلطهگریه.
در حالی که موضوع اصلی قدرت نیست، کنترله.
اینکه چه کسی توانایی بیشتری برای تعیین جهت رابطه داره و چه کسی بیشتر از دست دادن رابطه رو تهدید میبینه.
در حالی که موضوع اصلی قدرت نیست، کنترله.
اینکه چه کسی توانایی بیشتری برای تعیین جهت رابطه داره و چه کسی بیشتر از دست دادن رابطه رو تهدید میبینه.
۳/ از همون لحظهای که جذب کسی میشی، یک مذاکره نانوشته شروع میشه.
هر دو نفر همدیگه رو ارزیابی میکنن، ظاهر، شخصیت، جایگاه اجتماعی، اعتمادبهنفس و دهها فاکتور دیگه.
رابطه در اصل یک توافق دوطرفهست، نه یک داستان تخیلی.
هر دو نفر همدیگه رو ارزیابی میکنن، ظاهر، شخصیت، جایگاه اجتماعی، اعتمادبهنفس و دهها فاکتور دیگه.
رابطه در اصل یک توافق دوطرفهست، نه یک داستان تخیلی.
🚗🔋 Many think Beijing masterfully planned China's EV takeover. Fengming Lu (@ANUBellSchool ) and I spent 3 years and 60+ interviews finding out what actually happened in our latest article @TheChinaJournal. A thread 🧵
In 2014, the top 10 automakers in China were ALL state-owned or state-foreign joint ventures. By 2024, BYD, Geely, Chery, and other PRIVATE firms dominate. How did an industry rigged for SOEs get flipped by private entrepreneurs? That's the puzzle.
The standard narrative: Beijing picked winners, poured in subsidies, and created EV champions. We show that this is largely a misperception--Central policy actually BLOCKED most cities and private firms from the auto industry for decades.
Annamalai, the Sorcerer to break the 'Dravidian Spell' on Tamil Nadu?
The Statement "National Parties never spoke the language that people in Tamil Nadu understood" in Shri.Annamalai's letter of resignation from the membership of BJP is quite noteworthy. Was BJP at fault for their inability to make inroads in Tamilnadu? 🧵 1/n
#AnnamalaiSpeech #AnnamalaiParty @BaluSreevidya @Trishulwarrior
The Statement "National Parties never spoke the language that people in Tamil Nadu understood" in Shri.Annamalai's letter of resignation from the membership of BJP is quite noteworthy. Was BJP at fault for their inability to make inroads in Tamilnadu? 🧵 1/n
#AnnamalaiSpeech #AnnamalaiParty @BaluSreevidya @Trishulwarrior
If one recalls, in the last 5+ years, Prime Minister Modi made several visits to Tamilnadu, quoted Tamil verses, made short quips in Tamil, brought Tamilian heritage back from foreign soil and awarded several developments for the state. He also joined for the celebration of Annamalai's 'En Mann, En Makkal' march around TN.
Then how can Annamalai accuse BJP of not understanding the pulse of Tamilnadu? One need to go a bit deep. 2/n
Then how can Annamalai accuse BJP of not understanding the pulse of Tamilnadu? One need to go a bit deep. 2/n
BJP has been present in Tamilnadu politics for over 3 decades but always had to biggyback on to one or the other of Dravidian parties in every election. The Tamilian voters were brainwashed deep and conditioned, by Dravidian parties particularly DMK and its allies, to think that the present Central govt, BJP and its associate RSS are not secular and hence are against the interests of Tamilnadu, particularly that of minorities. Both DMK and AIADMk allowed Kthemselves to dictated by vested interests and started pushing an agenda against Hindus and BJP.
Annamalai was one of the couple of BJP Leaders who was eloquent in Tamil to bring in clarity in their but the speeches of the BJP leaders from the North didn't help BJP to connect with the Tamilians. 3/n
Annamalai was one of the couple of BJP Leaders who was eloquent in Tamil to bring in clarity in their but the speeches of the BJP leaders from the North didn't help BJP to connect with the Tamilians. 3/n
Paraguay 🇵🇾 just rewrote the rules for permanent residency
So if you're getting a Plan B here... read this twice
On May 28, Migraciones signed Resolution 407. It takes every scattered rule about proving "economic solvency" and merges them into one document
Before this, the criteria lived in six different resolutions that contradicted each other. One set for MERCOSUR citizens, another for everyone else, patched over and over until nobody knew which version applied
Now there's one rulebook, which means, same rules for everyone
Here's what you actually need to know. This is going to be a LONG post because there are a lot of changes 👇
So if you're getting a Plan B here... read this twice
On May 28, Migraciones signed Resolution 407. It takes every scattered rule about proving "economic solvency" and merges them into one document
Before this, the criteria lived in six different resolutions that contradicted each other. One set for MERCOSUR citizens, another for everyone else, patched over and over until nobody knew which version applied
Now there's one rulebook, which means, same rules for everyone
Here's what you actually need to know. This is going to be a LONG post because there are a lot of changes 👇
1. Solvency is only checked at the permanent stage
Temporary residency still does not require it. That part has not changed
What changed is how strict they are when you convert from temporary to permanent. This goes very in line with the new Investor Pass they recently launched; they want to make it harder to get residency the "old" way to push this alternative
Temporary residency still does not require it. That part has not changed
What changed is how strict they are when you convert from temporary to permanent. This goes very in line with the new Investor Pass they recently launched; they want to make it harder to get residency the "old" way to push this alternative
2. A university title alone is dead as proof
This is the biggest change
For years people showed a diploma and a "promise of work" letter and called it solvency. But that window is closed now
Professionals and technicians now have to show real income. That means social security enrollment, a registered work contract, or actual tax filings
A credential with nothing moving behind it will not pass
This is the biggest change
For years people showed a diploma and a "promise of work" letter and called it solvency. But that window is closed now
Professionals and technicians now have to show real income. That means social security enrollment, a registered work contract, or actual tax filings
A credential with nothing moving behind it will not pass
Есть такой детский опыт, который все мы проделывали. Два зеркала "лицами друг к другу" отображают уходящий в бесконечность ряд зеркал, в каждом из которых – ничто.
Неплохая иллюстрация проективной идентификации, без громоздких абстракций сплиттинга/проекции/провокации/интроекта.
Неплохая иллюстрация проективной идентификации, без громоздких абстракций сплиттинга/проекции/провокации/интроекта.
Всё чаще задумываюсь о том, что абстракции Кляйн, непротиворечиво и логично описывая замкнутый круг ПИ – в то же время излишне тяжеловесны и неповоротливы. Кляйн, это как Станиславский в психоанализе. Мощно и глубоко, но иногда хочется ведь лёгкости и изящества Мейерхольда...
Зеркальные нейроны дают нейробиологическую иллюстрацию ПИ Кляйн, но остаются на уровне мозга. Контейнирование Биона уже значительно более гибко. Но при этом, на мой взгляд, остаётся потребность в более подвижной версии именно кляйнианской логики на психоаналитическом уровне.
UK tax has gone up significantly over the last 25 years
But the tax paid by the average UK worker has not
This apparent miracle was achieved by taxing “other people”: higher earners, capital, property, banks, etc
The strategy has run out of road
A 🧵 on what happens next.
But the tax paid by the average UK worker has not
This apparent miracle was achieved by taxing “other people”: higher earners, capital, property, banks, etc
The strategy has run out of road
A 🧵 on what happens next.
There is a much longer version of this thread on our website with full citations, links to sources, and all the charts are interactive and much clearer.
This is a quick summary...taxpolicy.org.uk/2026/06/05/tax…
This is a quick summary...taxpolicy.org.uk/2026/06/05/tax…
I'll post that chart again because it's amazing. The green line soars upwards, as the overall level of tax goes up.
Tax on the average worker goes *down* (until recently!)
Tax on the average worker goes *down* (until recently!)
Peter Sagan vs John Degenkolb vs Alexander Kristoff; Paris Roubaix 2015 (part 2).
#cyclingiceberg 1/22
#cyclingiceberg 1/22
Paris Roubaix was the climax to the cobbled/flat classics stretch in 2015. Flanders/San Remo were covered in the previous thread.
Much like all spring, Kristoff, Degenkolb and Sagan were the top contenders for Roubaix. 2/22
Much like all spring, Kristoff, Degenkolb and Sagan were the top contenders for Roubaix. 2/22
Like most races, Paris Roubaix was also a close race and it didnt disappoint in the end. The passage through Wallers was calm, but on one of the next sectors the train crossing closed as the peloton passed. Some riders ignored the signal, but nobody was disqualified. 3/22
🚨🚌 SIGNALEMENT : Patrick Belly (@belly_patrick), chauffeur de bus à la @RATPgroup, originaire de La Réunion 🇫🇷🇷🇪 et résidant dans le 16ᵉ arrondissement de Paris, est un individu au profil particulièrement inquiétant.
‼️ Il harcèle quotidiennement des élus juives de la @mairiedu16 et accompagne régulièrement un groupe de petites filles dans une école élémentaire située aux abords du Parc des Princes.
Sur ses réseaux sociaux, il multiplie les contenus antisémites et négationnistes : incitation à la haine des Juifs, contestation de la Shoah, photographie torse nu avec une moustache hitlérienne en effectuant la quenelle de Dieudonné, diffusion de thèses complotistes et assimilation récurrente des Juifs au nazisme.
Par ailleurs, sur X, il suit de nombreux comptes islamistes.
⚠️ Compte tenu de l’extrême gravité des contenus diffusés, du harcèlement d'élus juives et de sa proximité avec des enfants, nous appelons la municipalité, l’établissement concerné et les pouvoirs publics à faire preuve de la plus grande vigilance.
cc @Interieur_Gouv @education_gouv @egregoire @prefpolice @PoliceNationale @Jeremy_Redler @fszpiner @Nizardisabelle @Association_OJE @LICRA @ActionsAvocats @ObservatoireOjf
‼️ Il harcèle quotidiennement des élus juives de la @mairiedu16 et accompagne régulièrement un groupe de petites filles dans une école élémentaire située aux abords du Parc des Princes.
Sur ses réseaux sociaux, il multiplie les contenus antisémites et négationnistes : incitation à la haine des Juifs, contestation de la Shoah, photographie torse nu avec une moustache hitlérienne en effectuant la quenelle de Dieudonné, diffusion de thèses complotistes et assimilation récurrente des Juifs au nazisme.
Par ailleurs, sur X, il suit de nombreux comptes islamistes.
⚠️ Compte tenu de l’extrême gravité des contenus diffusés, du harcèlement d'élus juives et de sa proximité avec des enfants, nous appelons la municipalité, l’établissement concerné et les pouvoirs publics à faire preuve de la plus grande vigilance.
cc @Interieur_Gouv @education_gouv @egregoire @prefpolice @PoliceNationale @Jeremy_Redler @fszpiner @Nizardisabelle @Association_OJE @LICRA @ActionsAvocats @ObservatoireOjf
📌
📌
🧵L’approvazione della legge delega sul #nucleare alla Camera è un piccolo ma significativo passo avanti. Qui trovate alcune considerazioni generali e un approfondimento sulla scelta delle tecnologie. le modalità di finanziamento e l’individuazione dei siti 1/n
Anzitutto, il ddl deve andare al Senato. Se ci saranno modifiche, tornerà a Montecitorio (dove @lsqueri dovrà sudare altre sette mila camicie). Il ministro @GPichetto ha garantito l’approvazione entro l’estate: assumiamo che sia vero (non è scontato). Cosa succede poi? 2/n
Attraverso una legge delega, il Parlamento demanda al governo la funzione legislativa su temi di particolare complessità tecnica come, appunto, la costruzione praticamente da zero della disciplina di riferimento per l’utilizzo dell’energia nucleare a scopi civili 3/n
Chris Hemsworth was eating 4,500 calories a day to play Thor.
Peter Attia told him to eat NOTHING for 4 days.
He destroyed his "zombie cells", slashed his Alzheimer's risk, and burnt fat quicker.
Here's what happened to his body (& how you can do the same):🧵
Peter Attia told him to eat NOTHING for 4 days.
He destroyed his "zombie cells", slashed his Alzheimer's risk, and burnt fat quicker.
Here's what happened to his body (& how you can do the same):🧵
Before we jump into the changes and the benefits in his body...
Here's why Peter Attia recommended 4 day of fasting in Chris' first fasting session ever:
Here's why Peter Attia recommended 4 day of fasting in Chris' first fasting session ever:
1. Autophagy activation.
After 16-20 hours without food, your body triggers autophagy:
- Cancer risk drops
- Chronic disease risk reduces
- Fat is used as the source of energy
After 16-20 hours without food, your body triggers autophagy:
- Cancer risk drops
- Chronic disease risk reduces
- Fat is used as the source of energy
Does El Niño forecasting have their own version of a "hot models" problem?
There are currently 13 seasonal forecast ensembles used to predict future El Niño / La Niña.
Diversity is good, but there remains broad disagreement among them, with some suggesting all-time records.
🧵
There are currently 13 seasonal forecast ensembles used to predict future El Niño / La Niña.
Diversity is good, but there remains broad disagreement among them, with some suggesting all-time records.
🧵
First, let's just note that essentially every model predicts El Niño is coming. The uncertainty is about intensity.
Some have a moderate event, many have a strong or very strong event, and a few have a record-smashing event.
2/
Some have a moderate event, many have a strong or very strong event, and a few have a record-smashing event.
2/
If you are looking at just one El Niño forecasting model you are probably not getting the full picture.
The spread amongst models is considerably greater than the spread reported by most individual models.
3/
The spread amongst models is considerably greater than the spread reported by most individual models.
3/
NEW: a report from Vanderbilt and WashU just dropped, taking on the "state of scholarship in the humanities and social sciences," a big topic among critics of higher ed.
Read along w/ me 🧵
Read along w/ me 🧵
The report's premise is that support for the humanities and social sciences has cratered among basically everyone.
It gives several possible reasons: the misuse of the hard sciences, "problematic philosophical view," and—most notably—ideological distortions.
It gives several possible reasons: the misuse of the hard sciences, "problematic philosophical view," and—most notably—ideological distortions.
Interestingly, the report immediately narrows its scope down to that last complaint, that scholarship has been overrun by political goals, distorting disciplinary standards and producing bad research.
Food/Fruits that increases male performance instead of v!agra🔥🔥
Number 3 will suprise you
Number 3 will suprise you
1. Watermelon
Watermelon contains antioxidants lychee which can positively affect male fertility and performance quality
2. Beet Juice
Beets are filled with natural nitrates reasons most athlete drink it before training
Watermelon contains antioxidants lychee which can positively affect male fertility and performance quality
2. Beet Juice
Beets are filled with natural nitrates reasons most athlete drink it before training
3.Banana
They are highly rich in potassium and riboflavin which improves immediate stamina and testosterone ,they also contains bromelain which elevates s*ex drive and help manage impotence
4.Avocado
Packed with vitamins and vitamin E which directly improves the s p e r m quality and support healthy production
They are highly rich in potassium and riboflavin which improves immediate stamina and testosterone ,they also contains bromelain which elevates s*ex drive and help manage impotence
4.Avocado
Packed with vitamins and vitamin E which directly improves the s p e r m quality and support healthy production
'CONSERVATIVE' GROUP DEFENDING SPLC?🤔
Today, Society for the Rule of Law moved to file an amicus brief in U.S. v. SPLC, suggesting the DOJ engaged in vindictive prosecution. I can't help but wonder, what sort of conservative group takes the SPLC's side?
🧵1/15
Today, Society for the Rule of Law moved to file an amicus brief in U.S. v. SPLC, suggesting the DOJ engaged in vindictive prosecution. I can't help but wonder, what sort of conservative group takes the SPLC's side?
🧵1/15
The society claims it wants to protect prosecution from "political influence." The group says it "has not always concurred with" the SPLC's rhetoric, action, or tactics, but "opposes vindictive prosecution of any target."
🧵2/15
🧵2/15
The society notes: @FBIDirectorKash condemned the SPLC as a "partisan smear machine" (it is), @Jim_Jordan asked the AG to examine the SPLC's influence under Biden, Pam Bondi was fired reportedly in part for not being aggressive enough, and Trump attacked SPLC.
🧵3/15
🧵3/15
If I had 20lbs+ to lose by summer, here are the habits I'd commit to for the next 90 days:
1. Protein at Every Meal
First meal of the day starts with protein. Every meal after that has protein.
I'm using the 1-1-1 formula:
• 1 protein (eggs, steak, chicken, ground beef)
• 1 carb (rice, sweet potatoes, oats)
• 1 fat or flavor (avocado, hot sauce, olive oil)
Batch-cook 2 proteins and 2 carbs on Sunday. Rotate flavors through the week.
Why?
Protein keeps you full, preserves muscle, and makes the whole thing easier.
First meal of the day starts with protein. Every meal after that has protein.
I'm using the 1-1-1 formula:
• 1 protein (eggs, steak, chicken, ground beef)
• 1 carb (rice, sweet potatoes, oats)
• 1 fat or flavor (avocado, hot sauce, olive oil)
Batch-cook 2 proteins and 2 carbs on Sunday. Rotate flavors through the week.
Why?
Protein keeps you full, preserves muscle, and makes the whole thing easier.
2. 8,000+ Steps Daily
Not "workouts." Just walking.
• Morning walk before work.
• Lunchtime loop.
• Evening stroll after dinner.
Breaking it up throughout the day. Not grinding out 8K in one session.
This is one of my 3 non-negotiables that keeps consistency going even when life gets messy.
Not "workouts." Just walking.
• Morning walk before work.
• Lunchtime loop.
• Evening stroll after dinner.
Breaking it up throughout the day. Not grinding out 8K in one session.
This is one of my 3 non-negotiables that keeps consistency going even when life gets messy.
Lo baru sadar HPnya ilang, langsung buka Find My Device lewat laptop.
Last seen 5 jam lalu di Stasiun Gambir. Abis itu? Udah.
Nggak gerak lagi. Langsung offline.
Si maling langsung matiin internet biar ga ke trace. Itu cara jadul.
Dulu sampe situ doang.
Sekarang? Nggak lagi.
Last seen 5 jam lalu di Stasiun Gambir. Abis itu? Udah.
Nggak gerak lagi. Langsung offline.
Si maling langsung matiin internet biar ga ke trace. Itu cara jadul.
Dulu sampe situ doang.
Sekarang? Nggak lagi.
Sekarang Android udah bawa fitur Find My Device Network. Mirip AirTag Apple, tapi ini langsung nyangkut di sistem dan gratis. Jadi meski HP lo offline, posisinya tetep bisa ke detect lewat Bluetooth dari HP Android lain yang kebetulan lewat situ.
Gini kerjanya:
➤ HP lo yang ilang bakal terus nyiarin sinyal Bluetooth.
➤ Tiap HP Android yang lewat bakal nangkap sinyalnya. Lalu data lokasi langsung dikirim ke server Google dalam keadaan terenkripsi.
➤ Lo cuma buka Find My Device buat cek posisi terbaru. Semua jalan otomatis, tanpa ada yang tau.
➤ HP lo yang ilang bakal terus nyiarin sinyal Bluetooth.
➤ Tiap HP Android yang lewat bakal nangkap sinyalnya. Lalu data lokasi langsung dikirim ke server Google dalam keadaan terenkripsi.
➤ Lo cuma buka Find My Device buat cek posisi terbaru. Semua jalan otomatis, tanpa ada yang tau.