I really enjoyed this conversation with Grant. Here's the outline: 0:00 - Introduction 1:56 - What kind of math would aliens have? 3:48 - Euler's identity and the least favorite piece of notation 10:31 - Is math discovered or invented? 14:30 - Difference between physics and math 17:24 - Why is reality compressible into simple equations? 21:44 - Are we living in a simulation? 26:27 - Infinity and abstractions 35:48 - Most beautiful idea in mathematics 41:32 - Favorite video to create 45:04 - Video creation process 50:04 - Euler identity 51:47 - Mortality and meaning 55:16 - How do you know when a video is done? 56:18 - What is the best way to learn math for beginners? 59:17 - Happy moment

3B1B is really doing so much for math

You know Grant is a mathematician when he says, "such that".

“Once you understand something it doesn’t have the same beauty” - 3B1B Somehow such relatable human feeling.

Dude you're killing it with these guests!

3blue is a modern day hero i tell ya. and hes my hero for sure

3Blue1Brown has changed the world of education itself, introducing easy to visualise understanding of complex concepts. Love from India🇮🇳💗

I remember in my first semester of high school, I had decided that I wanted to study mathematics. I was horrible at it, I didn't know anything, and I got the worst grades (C's and D's). I gave up a couple of times, but now I'm getting top grades in topics like complex analysis, real analysis, and partial differential equations. I had lost motivation at times, but people like Grant Sanderson really inspired me to see WHY I am studying mathematics. It's a really beautiful subject, and Grant just radiates zeal for it - it's great to see.

I really believe Grant is the smartest person I've heard speak. Not just because he understands a whole lot, but because he is able to communicate it. I see him as Feynman's successor in that regard. What a champion!

Seriously, Lex, you’ve been doing an outstanding job at bringing in amazing guests and having interesting conversations! 3B1B is one of my favorite channels, for sure. Thank you!

Grant Sanderson is an understated genius. 3Blue1Brown is the type of channel that can ACTUALLY change the world - One mind at a time. He makes understanding the world around us interesting, while also making higher Maths accessible. Such a refreshing change from the usual distractions.

Mr Sanderson has a clarity with abstractions which makes you feel like he can wield them like swords respectfully sharpened beyond peacetime demonstration. You simply can't help giving him a lot of respect out of pure self-preservation.

I'm blown away: I just googled "Grant Sanderson" and he is the guy behind 3Blue1Brown! One of the most cogent and explanatory KZfaq channels I've come across!

This guy is my favorite guest on this podcast so far.

I can't explain.....It gives me immense pleasure to see two of you talking deep things, discussing things that I have interest in too. Two blessed souls.

Thank you Lex for putting these interviews together, putting yourself out there, and having damn good conversations with risky questions. Really appreciate you, friend. Cheers

This is such a beautiful conversation. The brutal honesty of Grant's "I don't know, man!", the 'aha'-moments, the way the both of you can compress years of discussions I've had with friends in to one-liners and then build upon them further... This just keeps giving! Thanks so much for this

These are just unbelievably amazing interviews. You are so right when you say "never too philosophical."

Thank you so much for having Grant on the podcast. Fascinating young man!

Grant's description of the process of understanding is gold. Starting from definitions is like providing students a list of places to visit with no map to put them on. Providing visuals (or other concretizing examples) early on provides a structure that later knowledge can adhere to

Always watching his videos with his voice and manim, and also his pandemic videos about maths, and then this feels so different now, having him speak to someone else and seeing how much enthusiasm he has for all these things!

Love 3blue1brown have this guy back on! Need more podcasts getting “into the weeds” with math in a conversational manner. Awesome job!

Wow! While I could not grasp some of the more technical mathematical concepts discussed, I still enjoyed how clearly Grant can think and express himself. It's clear how his deep learning playlist is so beautifully explained

This was (at least for me) hands down, the best interview I`ve experienced. 2 people with minds set in two different fields yet still relevant to each other. Many of the things Grant says really is mind opening. Grant making great claims about questions about infinity and Lex showing great responses "some push backs too" to those. You both are great and I loved listening to this.

Thank you so much, Lex, for gifting such a beautiful podcast with such a superb personality. God bless you.

Thank you, Grant, you've turned on so many lights I didn't know were off. Keep up the good work! And you too, Lex, you're doing something important with these interviews.

Wow, wow, wow, My wish has been granted!! I was eagerly waiting for this one!! There is nothing more beautiful than to sit back and have two of your favourite creators talk on thw topics dear to you heart-STEM. This has to be the best one hour on KZfaq for a while now. Thanks for inviting Grant for such a stimulating and enlightening conversation!

That was the most beautiful way to end a discussion. Bravo!

Lex, I've listened to so many of your more recent interviews, and just today learned that you've interviewed Grant Sanderson multiple times. I had to check it out! The man is a legend in my mind, and I sooo enjoyed hearing more of his thoughts, beyond just what shows up in his videos. This was great. Thank you!

I have watched many of your videos, and just discovered these with Grant... I decided I'm going to jump back into math for data analysis and revisited 3blue1brown recently. Thankfully, the YT algorithm gods gave me these video suggestions of yours. Lex, I really can't tell you how grateful I am to have found your podcast. When I'm too exhausted to work late or study, I can cook/clean/etc. and still listen to such high quality, intelligent and entertaining conversations knowing that my mental reserves are spent in a productive and stimulating way. I appreciate you and your work very much.

Grant Sanderson's eloquence is simply amazing. Concepts , Ideas and Visualisation seem to get converted into almost musical articulation with effortless ease in his brain. The cascade of words, phrases and sentences that gush forth from his mouth as he conveys his Mathematical understanding in English language simply enthralls me! I have never seen him fumble for a single word, ever !!!! Thank you Grant . Keep going.

The best thing about Lex is that he never pretends that he completely understands, and he never pretends that his questions are naive. He prepares beforehand and is so honest about what he knows and what he wants to know during these interviews. Like "Are you ok with the existence of infinity" is a great question. He asks the questions that stem students, like me lol, don't really get to ask or don't know how to ask.

This was one of your best interviews yet on this channel. You really have a gift for asking thoughtful questions that guide your guests toward insightful discussions. Keep up the great work.

At each Lex upload i stop everything i do to watch these amazing talks, these talks almost put you into a philosophical state of mind. Absolutely amazing.

Grant's visualisation of mathematical concepts becomes the heart and soul of insights!

Wow, Grant's mind is sharp as it can get. Amazing to see him articulating complex responses while talking around the subject. Listening to the podcast is great. Watching it is another level. Thanks Lex!

How is it that you seem to always get the most interesting people week after week. I am a huge fan of 3Blue1Brown, and he's even better in person. Great video! And great discussion.

Thank you very much for this Interview. 3Blue1Brown is my one of my 2 favorite Math series on KZfaq. Additionally it is the best mathematic show. Extremely helpful. You are doing great work Lex. Lex and JRE are hands down the best podcast on KZfaq.

Oh, I think now I have some intuition about what infinity is. I could listen to these two infinitely! Good job, Lex, as always!

I am from Bangladesh and each time I watch Mr. Grant explaining something, I experience pure joy. Thank you for making the world a better place.

1:01:14 Such a great ending note on how Grant Sanderson helped showcase the creative side of mathematics.

I’m absolutely head over heels that I found this channel in 2020! It’s everything I wanted from rogan with no filler and less entertainment based guests. I love rogan too. But we needed this! Lex proves not all heroes wear capes!

Was just thinking about how great it would be to have him on your podcast. You are two of the most impressive channels out there, thank you both for doing this interview!

The video presentation style and time breakup given along with every video are simply awesome ! Great content. Regards from University of Padeborn.

Excellent guest! I’ve recommended 3B1B innumerable times. It’s great to be able to get a feel for the mind behind it!

This channel is officially my favourite. Keep it up Lex!

The speaker's knowledge of the limits of information per unit area/volume is fascinating. He's not punting. One of your best guests for his understanding, imo.

Grant and lex conversation about abstraction from visualisation to the concept of infinity and the very essence of science is the highlight of this video. So succinct and apt to use the abstraction as processed by an AI to human concepts. Love your work Lex and Grant. Keep up the good work.

thank you for this amazing conversation. really enjoyable and thought-provoking like all of your videos

Being able to participate in a conversation with two such amazing and super enthusiastic individuals would surely be a defining point in my life

The specificity of your guest is wonderful to hear. Your guest is quite a brilliant speaker! He reminds me of no other than Ed Witten!

This was one of the best interview I've ever listened to Fantastic Job both!

This gets interesting every minute of it, love it !! Math is much more fun when discussed.

Great questions, great answers by Grant and really I liked your revision of his answers.

So weird looking at Grant's face having never seen it - like meeting a vendor that you've only ever talked to on the phone! Great chat!

My two favorite science/math KZfaqrs joined in conversation. Brilliant!

Amazing job, Lex. Your 1 hour talks bring me more thoughts than a year of school

Thank you for this high grade conversation! Very nice.

27:00 definition of abstraction… brilliant❤

I loved his Essence of Linear Algebra series

Seriously one of the absolute best videos ever made, I wish I could broadcast it to everyone! At least it's here, to be found, whatever that "means".

I just got into the Lex Fridman podcast a couple months ago, and today I thought, 'Oh man, Lex HAS to interview Grant!'... Imagine my surprise when I found that the conversation already exists! Now to enjoy some Lex + Grant goodness.

What an awesome episode. Keep the great guests coming!

Grant is on another level. Literally playing 8d chess

Already showed an architectural view of physics and math. Front end and back end. Brilliant.

I can't describe the joy I get from Grant's arguments. He sees the essance of everything he talks about, as if he programmed the universe

Grant is an exceptional teacher. He is the one that truly taught me calculus!

I have been waiting for this since you put up the Twitter post in November! Thank you!

Very exciting character and thanks, Lex, for making this interview happen.

im gonna watch this like 10 x ///its wonderful to have my coffee and watch two absolutely beautiful men have this stimulating conversation absolutely a wonderful time to be alive ......muah!!! thank you Lex

Watching how genuinely happy they get taking to each other is amazing!

I always love how you can tell when Lex is briefly busy computing. :D Thanks for all of this, Lex! :)

This was amazing! I was so happy to see the name "Grant Sanderson", and you had Melanie Mitchell Recently!!!! Great times, thank you so much for this podcast!!!

I could listen to Grant all day. Good voice, smart thoughts.

Thanks for sharing this video. As someone who has taught others math, chemistry, and physics, I can confirm that teaching others imprint the info very strongly with you. Having to try to relate "the book" with all is absolutes to someone who doesn't necessarily retain all of the prerequisite facts means that you have to do so much more that just repeat the info. If forces you to see things from different angles, make different analogies, adjust to different phrasings, and so much more. You often gain new insights from doing this, even if neither of you understand the problem completely. On a side-note, if you could ask Grant to include a link to some related problems on Khan or where ever that people can take on with the things he address in his videos, that would bring a huge improvement to the understanding of those who engage it. Without working with the tools you don't retain it well, and then the value of the video is severely diminished.

I could listen to them talk all day!

Grant Sanderson, One of the people I'll always be grateful until the last day I breathe!

a truly interesting conversation! thank you for the great content!!

This is a superb interview! It's interesting from the start to the finish.

31:17 love the discussion on accepting that you can't concretely understand very abstract concepts in a way that you can anchor your understanding simply. Kind of makes me think that is why these concepts are intrinsically abstract. :)

3b1b brings math education to a whole new level

Awesome interview. I love his channel and the visualizations he does with mathThx!

51:48 “Would your life be four times as meaningful if you died at 25?” This has got to be one of the most quick-witted and profound responses to a serious, complex question I’ve ever heard, and I don’t know why, but it had me laughing my ass off.

You are doing a great service by interviewing such wonderful people. While a lot of the people here are focused on abstract ideas, it will be useful to also interview people who do hands on work like artists, engineers, architects, product development teams to understand their thought process and creativity. Like for example, how on earth anyone was able to come up with an idea a bicycle, a microwave, risk insurance. I believe understanding these kinds of traits are important to make progress towards Artificial General Intelligence.

my only regret is that I can only give this one like. thank you 3B1B, and Lex!

I really appreciate the editing.

This guys channel has taught me more about math in minutes than any traditional teacher has taught me in hours, and it was entertaining. Teachers should be showing his videos in class.

Programming indeed inspired me to understand, learn, and see the beauty of math in a way that no other medium has done.

This is one of my favs of yours Lex. Great combo you and Grant, his channel is also great. Can't wait to hear what you guys jam up hahaha :D

This podcast always delivers!

Oftentimes it feels that Grant is speaking a different language! Love his passion for math.

Grant has one of my favorite KZfaq channels and I’m not being hyperbolic why I say that I understand very little. But I watch again and again with hope. Best Regards Lex and thank you for everything Gilbert Strang to Grant to the one you released yesterday about self-replicating robots. I taught English for many years at PEA and only faintly remember math.

Great job done by the host. Impressive insight shown by Grant about basic questions with complex answers, given they exist at all. But, much improvement can be made by the host with regard to articulation and conciseness.

Enjoyed this talk, and Grant got me into the intuitive essence of linear algebra which got me into enjoying solving approaches to linear proofs. But most of all, I just learned my Mac has Grapher...

I love both of you for each and every word of this!

It was nice to see Lex being more relaxed and talkative.

35:10 I wish I would have known this earlier. It took me 3 years of Mathematics at University until I realized that starting with concrete use cases and then going to abstraction is a way more natural way of understanding and makes it so much more accessible. Before I would just learn the definitions and not worry too much about examples or the physical motivation, because, well.. they're for the physicists and engineers, I thought.

This guys videos on neural networks and blockchains are the best on youtube. Grant should start his own teaching platform.

Thanks,I was eagerly waiting for this one;

I like the way those 2 guys talk. Sounds so rational and peaceful