An MIT professor taught the same math course for 62 years, and the day he retired, students from every country on earth showed up online to watch him give his final lecture.
I opened the playlist at 2am and ended up watching three of them back to back.
His name is Gilbert Strang. The course is MIT 18.06 Linear Algebra.
Every machine learning engineer, every data scientist, every quant, every self-taught programmer who actually understands how AI works learned the math from this one man. Most of them never set foot on MIT's campus. They just opened a free playlist on YouTube and let him teach.
Here's the story almost nobody tells you.
Strang joined the MIT math faculty in 1962. He retired in 2023. That is 61 years of standing at the same chalkboard teaching the same subject to 18-year-olds.
The interesting part is what he did when MIT launched OpenCourseWare in 2002. Most professors were skeptical. They worried that putting their lectures online would make their classrooms irrelevant. Strang did not hesitate. He said his life's mission was to open mathematics to students everywhere. He filmed every lecture and gave it away.
The decision quietly changed how the world learns math.
For decades linear algebra was taught the wrong way. Professors started with abstract vector spaces and proofs about field axioms. Students drowned in the abstraction. Most never recovered. They walked out believing they were bad at math when they had simply been taught in an order that nobody's brain is built to absorb.
Strang inverted the entire curriculum.
He started with matrix multiplication. Something you can write down on paper. Something you can compute by hand. Something you can see. Then he showed his students that everything else in linear algebra eigenvectors, singular value decomposition, orthogonality, the four fundamental subspaces was just a different lens for understanding what the matrix was actually doing under the hood.
His rule was strict. If a student could not explain a concept using a concrete 3 by 3 example, that student did not actually understand the concept yet. The abstraction was supposed to come last, not first. The intuition was the foundation. The proofs were just confirmation that the intuition was correct.
The second thing Strang changed was the classroom itself. He said please and thank you to his students. Every single lecture. He paused mid-derivation to ask "am I OK?" to check if anyone was lost. He never used the word "obviously" or "trivially" because he knew exactly what those words do to a student who is one step behind. He treated 19-year-olds learning math for the first time the way he treated his own colleagues. With patience. With respect. With the assumption that they belonged in the room.
For 62 years.
The result is something that has never happened in the history of education. A single math professor became the default teacher of his subject for the entire planet.
Universities in India, China, Brazil, Nigeria, every country with a computer science department, started telling their own students to just watch Strang's lectures. The University of Illinois revised its linear algebra course to do almost no in-person lecturing. The reason was honest. The professor said they could not compete with the videos.
His final lecture was in May 2023.
The auditorium was packed with students who had never met him before. He walked to the chalkboard, taught for an hour, and at the end the entire room stood and applauded. He looked confused for a moment, like he genuinely did not understand why they were cheering. Then he smiled and waved them off and walked out.
His written comment under the YouTube video of that final lecture was four sentences long. He said teaching had been a wonderful life. He said he was grateful to everyone who saw the importance of linear algebra. He said the movement of teaching it well would continue because it was right.
That was it. No book promotion. No farewell speech. No legacy management.
The man whose teaching is the foundation of modern AI just thanked the audience and went home.
20 million views. Zero ego. The entire engine of the AI revolution sits on top of math that millions of people learned for free from one quiet professor in Cambridge.
The course is still on MIT OpenCourseWare. Every lecture, every problem set, every exam, every solution. Free.
The most important math course of the 21st century is sitting one click away from you. Most people will never open it.
When I first bought my telescope I thought getting photos like this was Earth was impossible
If you discard what you think is impossible the possibilities become infinite.
A friend of mine from Harvard Law set up his own firm last year. Solo practice. No associates. No paralegals. Working out of a co-working space with a laptop and a coffee habit.
Last month a mid-size business owner reached out looking for outside counsel. Three firms were being considered. Two of them were 15-attorney shops. The kind with pitch decks, associate teams, and glass-walled conference rooms that smell like fresh carpet and overbilling.
My friend was a one-person firm with a WeWork membership.
He almost canceled. He thought there was no way he could compete with that.
I told him to try one thing before he walked away. Open Claude Code. Give it the owner's name, the company name, and 45 minutes. Ask it to build a complete intelligence report using only publicly available data.
He did not think it would work. He tried it anyway.
Claude came back with a 13-page report.
He read it over coffee. Took 28 minutes. By the time the Zoom started, this solo attorney knew things about the prospect's company that the owner's own in-house team probably had not assembled in one place.
The company was incorporated in Delaware but registered as a foreign entity in Texas 14 months later. That is expansion. A second member was added to the LLC in 2024. Claude pulled the operating agreement implications from the state filing and flagged what a new member meant for governance, profit distribution, and decision-making authority.
Three active trademark applications filed in the last six months. Two were in a product category the company had never publicly announced. Nobody on the website knew about it. The trademark filings did.
PACER hit. The company had been named as a defendant in a vendor dispute 18 months ago. It settled. But the complaint was public and Claude read every page of it. The core issue was a supply agreement with no termination clause. My friend now knew this company had been burned by a bad contract. They would care deeply about airtight vendor agreements going forward. He did not have to guess. It was in the filing.
State court records. The owner had a dissolved LLC from 2019 with a different partner. A business divorce. Which meant this owner would value clear partnership terms and buy-sell provisions this time around. People who have been through a bad breakup want a prenup for the next one. Same principle.
Hiring activity. Four job listings posted in 60 days. Head of compliance. Operations manager. Two warehouse roles. They were scaling fast and hiring operational infrastructure. That is exactly when companies need outside counsel the most and know it the least. They think they need a lawyer when they get sued. They actually need a lawyer when they start hiring a Head of Compliance.
Glassdoor. 11 reviews. Every positive one mentioned culture. Every negative one mentioned the same thing. "No HR. No handbook. No process." A company growing faster than its internal policies. An employment claim waiting to happen. And a business owner who probably had no idea what his own employees were writing about him.
Google reviews. 4.3 stars. But Claude flagged a pattern in the 1-stars. Three different customers mentioned the same issue. Product delivered late with no communication. The biggest operational liability was not product quality. It was fulfillment. That is a breach of warranty problem, a customer retention problem, and a potential class issue if the pattern scales with the company.
Then there was a section Claude titled "Founder Mindset." It pulled a transcript from a podcast the owner appeared on and analyzed his communication patterns. One quote stood out. He said "I have spent more on lawyers fixing problems than I ever spent on lawyers preventing them."
That one sentence told my friend exactly how to position his entire practice. Not as a litigator. Not as a fixer. As the lawyer who prevents the problems in the first place. The pitch wrote itself.
Claude also analyzed the owner's communication style across LinkedIn posts, podcast answers, and X replies. Based on patterns it flagged what mattered for the meeting: this person values substance over rapport. He distrusts anything that feels like a pitch. Lead with what you know. Skip the small talk. Show your work before you ask for the engagement.
My friend adjusted his entire approach based on that analysis.
The Zoom started. No pleasantries. No "let me tell you about my firm" warmup. The owner gave his overview. What the company does. Where they are heading. What they need.
Then my friend said "I noticed you filed two trademarks in a new product category last quarter. Is that the line you are launching in Q3?"
Silence.
"How do you know about that?"
A solo lawyer working from a coworking space just earned more credibility in one sentence than the 15-attorney firm earned in their entire pitch deck.
He walked the owner through everything. The vendor dispute and what it meant for future contracts. The hiring pattern and the compliance risk it signaled. The Glassdoor reviews pointing to an HR exposure. The fulfillment complaints that were one bad quarter away from becoming a warranty liability.
He did not pitch his services. He showed the owner his own blind spots using the owner's own public data. Then he said which ones he would fix first and why.
The owner said "the other firms sent me a brochure. You just showed me you already understand my business better than they do."
He hired my friend that week. A solo practitioner over two 15-attorney firms.
No associate team. No paralegal pulling research. No marketing department. One Harvard Law grad with Claude Code, a 13-page report, and 28 minutes of preparation that the other firms did not think to do.
This is what I keep telling solo lawyers and most of them do not believe me until they see it.
The advantage is not firm size. It is not headcount. It is not a fancy office or a partner track or a receptionist who offers sparkling water.
The advantage is showing up knowing things the prospect did not expect you to know. That is what wins the engagement. Every time.
And right now it is easier than it has ever been. Because almost everything about a business is public. It is just scattered across 15 different sources that no lawyer checks before a pitch meeting. Claude checks all of them in one run and hands you a report you can read before your coffee gets cold.
Secretary of State filings. Incorporation, officers, registered agents, foreign qualifications.
PACER and state court dockets. Every lawsuit, motion, and settlement.
USPTO. Trademark filings tell you where a company is going before they announce it.
LinkedIn job postings. What a company is hiring for reveals what is broken inside.
Glassdoor. What employees say when nobody from management is reading.
Google reviews. The 1-star reviews are where the legal risks hide.
Podcast transcripts. The founder's own words analyzed for how they think and decide.
UCC filings. Who they owe money to. What assets are pledged.
Property records. Leases, liens, ownership structures.
Communication pattern analysis. How this specific person talks, processes information, and makes decisions. So you know exactly how to show up.
All public. All free. One report. Under 30 minutes to read.
The solo lawyer who builds this into their pre-meeting workflow will win clients over firms 10 times their size. Not once. Every time. Because nobody expects a solo to show up that prepared.
And that gap between what they expect and what you deliver is the most valuable asset in your practice.
My friend is a Harvard Law grad. He has no team. He works from a coworking space. He is winning over 15-attorney firms because he spends 45 minutes doing what they never bother to do.
The playing field was never about resources.
It was about preparation.
And preparation just got automated.
I'm so thrilled to share my first ever collaboration with the great @Cathrinmachin. We decided to capture the legendary Pillars of Creation- but show them in a way that contextualizes the famous photo from Hubble.
Check out the next photo in the thread for the full image 👀
Ok my fellow Senior Friends, who doesn’t like to save some money 💵
FYI EVERYONE!!!
I heard a guy ask for his senior discount @ Wendy's, The girl at the register apologized and charged him less. When I asked the man what the discount was, he told me that seniors over age 55 ...get 10% off everything on the menu, every day. (But you need to ASK for your discount.)
This incident prompted me to do some research, and I came across a list of restaurants, supermarkets, department stores, travel deals and other types of offers giving various discounts with different age requirements. I was actually surprised to see how many there are and how some of them start as young as 50.
This list may not only be useful for you, but also friends and family, too.
Dunkin Donuts gives FREE coffee to people over 55. If you're paying for a cup every day, you might want to start getting it FREE.
YOU must ASK for your discount!
RESTAURANTS:
Applebee's: 15% off w/Golden Apple Card (60+)
Arby's: 10% off (55 +)
Ben & Jerry's: 10% off (60+)
Bennigan's: discount varies by location (60+)
Bob's Big Boy: discount varies by location (60+)
Boston Market: 10% off (65+)
Burger King: 10% off (60+)
Chick-Fil-A: 10% off or free small drink or coffee ( 55+)
Chili's: 10% off ( 55+)
CiCi's Pizza: 10% off (60+)
Denny's: 10% off, 20% off for AARP members ( 55 +)
Dunkin' Donuts: 10% off or free coffee ( 55+)
Einstein's Bagels: 10% off baker's dozen of bagels (60+)
Fuddrucker's: 10% off any senior platter (55+)
Gatti's Pizza: 10% off (60+)
Golden Corral: 10% off (60+)
Hardee's: $0.33 beverages everyday (65+)
IHOP: 10% off (55+)
Jack in the Box: up to 20% off (55+)
KFC: free small drink with any meal (55+)
Krispy Kreme: 10% off (50+)
Long John Silver's: various discounts at locations (55+)
McDonald's: discounts on coffee everyday (55+)
Mrs. Fields: 10% off at participating locations (60+)
Shoney's: 10% off
Sonic: 10% off or free beverage (60+)
Steak 'n Shake: 10% off every Monday & Tuesday ( 50+)
Subway: 10% off (60+)
Sweet Tomatoes: 10% off (62+)
Taco Bell : 5% off; free beverages for seniors (65+)
TCBY: 10% off (55+)
Tea Room Cafe: 10% off (50+)
Village Inn: 10% off (60+)
Waffle House: 10% off every Monday (60+)
Wendy's: 10% off ( 55 +)
Whataburger: 10% off (62+)
White Castle: 10% off (62+)
RETAIL & APPAREL :
Banana Republic: 30% off ( 50 +)
Bealls: 20% off first Tuesday of each month ( 50 +)
Belk's: 15% off first Tuesday of every month ( 55 +)
Big Lots: 30% off
Bon-Ton Department Stores: 15% off on senior discount days ( 55 +)
C.J. Banks: 10% off every Wednesday (50+)
Clarks : 10% off (62+)
Dress Barn: 20% off ( 55+)
Goodwill: 10% off one day a week (date varies by location)
Hallmark: 10% off one day a week (date varies by location)
Kmart: 40% off (Wednesdays only) (50+)
Kohl's: 15% off (60+)
Michael's: 10% off everyday (55+)
Modell's Sporting Goods: 30% off
Rite Aid: 10% off on Tuesdays & 10% off prescriptions
Ross Stores: 10% off every Tuesday ( 55+)
Salvation Army Thrift Stores: up to 50% off ( 55+)
Stein Mart: 20% off red dot/clearance items first Monday of every month ( 55 +)
GROCERY :
Albertson's: 10% off first Wednesday of each month ( 55 +)
American Discount Stores: 10% off every Monday ( 50 +)
Compare Foods Supermarket: 10% off every Wednesday (60+)
DeCicco Family Markets: 5% off every Wednesday (60+)
Food Lion: 60% off every Monday (60+)
Fry's Supermarket: free Fry's VIP Club Membership & 10% off every Monday (55 +)
Great Valu Food Store: 5% off every Tuesday (60+)
Gristedes Supermarket: 10% off every Tuesday (60+)
Harris Teeter: 5% off every Tuesday (60+)
Hy-Vee: 5% off one day a week (date varies by location)
Kroger: 10% off (date varies by location)
Morton Williams Supermarket: 5% off every Tuesday (60+)
The Plant Shed: 10% off every Tuesday (50 +)
Publix: 15% off every Wednesday (55 +)
Rogers Marketplace: 5% off every Thursday (60+)
Uncle Guiseppe's Marketplace: 15% off (62+)
You’re Welcome 😘
I am flying home today - long travel day. I get to the airport at an ungodly hour - 3:30 AM local. I am finally through security and customs etc, and I sit down. An older man comes and sits right next to me, looks at me directly in the eyes and introduces himself. Andre. He asks me how I am and what I do, and I ask him what he does and he tells me he’s a retired Air Force vet and he’s enjoying life. After some small talk he tells me he’s a diabetic… The next 1.5 hours were spent on education. I told him everything I could about the science behind carnivore and tell him he can CURE himself and probably never need insulin again if he just goes to @KenDBerryMD channel or @SBakerMD on YouTube. He hands me his phone, I sub him to both and create a playlist for him to listen on the plane. Before leaving, he asks if we can swap email in case he has any questions.
THIS is how we change things. Not on social media - by having real conversations with other humans.
Thank you for your service, Andre - and here’s to better health.
David Bowie picked Annie Lennox to perform Under Pressure with him at the '92 Freddie Mercury Tribute Concert. This rehearsal is AMAZING. Bowie’s expression alone is PRICELESS. What other famous artist can you spot
Insane: 64-year-old QB Steve Young says he can still play QB in the NFL if he needed to make a return.
“I absolutely feel confident that I could take the snap, run the screen game, throw the ball in the flat, maybe throw a slant. It’s not like, ‘Put on the pads and go play.’ Still, if it was ‘Hunger Games’? If they said, you had to do this or die? Yeah, you could pull off something,”
Young is one of the best to ever do it 🐐
On the last day of giveaways we are giving away a prize worthy for Clara herself… a shopping spree!
💙A $1000 Visa gift card
To enter:
🩰 Follow @AFCU
🩰 Save this post
🩰 Tag your besties below ⬇️
✨ Bonus: Share to your story & tag us for extra entries! ✨ Winners contacted TOMORROW. Only this account will contact you — beware of scams! Check official rules in bio. Happy Holidays!
Forever grateful to have been mentored and taught by this man! His career at Utah has been unmatched, and I have been blessed to be along for the ride; learning from and growing under one of the best minds this game has ever known! The sideline will never be the same without you! Love you, Coach!