The Ledger

Every statement that passed quotation and attribution checks. Mix any filter with any other: certainty 1/5, debate potential 5/5, or both at once.

clear all ✕

why aren't all 37 resolved? a statement only gets an assessment when the public record can support or contradict it. opinions and what-ifs never can, and 1 checkable ones are still open, waiting for their date. predictions held up or didn't; assertions are supported or contradicted. on every card: ▮▮▮▮▮ certainty · ▮▮▮▮▮ debate potential. speakers are clickable

Assertion Partly supported
Khan: 15 to 60 minutes weekly on Khan Academy prevented COVID learning loss
“What we saw in twenty-twenty-one is that the students who put in an average of 15 minutes on Khan Academy a week in a school setting, they actually saw no COVID learning loss, And that students who put in 30 to 60 minutes, they accelerated almost 40% faster th…”
Sal Khan Jul 27, 2023 ▶ 2:46 When AI is your personal tutor with Sal Khan of Khan Academy
Prediction Held up
Khan: Immersive AI 'holodeck' simulations are 3 to 5 years away
“You know, there's a world now where you can talk to historical characters, and we're probably three to five years away where you could share a room with Benjamin Franklin or Julius Caesar or Cleopatra and immerse yourself. It'll, it'll be literally the holodec…”
Sal Khan Jul 27, 2023 ▶ 34:50 When AI is your personal tutor with Sal Khan of Khan Academy
Prediction Open · timeframe Jul 2028
Khan: AI tutoring will help Khan Academy achieve two-sigma learning gains
“Essentially, old Khan Academy or base Khan Academy trying to get to that first standard deviation. And, but now with the AI, we can go to that second standard deviation.”
Sal Khan Jul 27, 2023 ▶ 16:55 When AI is your personal tutor with Sal Khan of Khan Academy
Insight
Only non-profits stay true to a social bottom line long-term
“While I was at a hedge fund, I saw how much capital structure and incentives can really drive what an organization does. And the only organizations that really do stay true to some social bottom line over long periods of time are nonprofits.”
Sal Khan Sep 21, 2020 ▶ 39:43 Khan Academy: Sal Khan
Insight
Khan: Only nonprofits stay true to a social mission long-term
“The only organizations that really do stay true to some social bottom line over long periods of time are nonprofits.”
Sal Khan Dec 8, 2025 ▶ 37:53 Khan Academy: Sal Khan. From Tutoring His Cousins to Teaching the World For Free (September 2020)
Opinion
Khan: Generative AI will either 10x Khan Academy or make it irrelevant
“Look, this is a transformational technology. This is one of these things where it's either going to allow us to magnify our impact by an order of magnitude, or it might make us irrelevant.”
Sal Khan Jul 27, 2023 ▶ 12:05 When AI is your personal tutor with Sal Khan of Khan Academy
Assertion Partly supported
Google and the Gates Foundation each granted Khan Academy $2 million in 2010
“And by fall of 2010, both the Google and the Gates Foundation each gave about two million dollars. So we had a four million dollar initial funding for that first two years to hire up a team, internationalize, and start scaling Khan Academy.”
Sal Khan Dec 8, 2025 ▶ 1:01:06 Khan Academy: Sal Khan. From Tutoring His Cousins to Teaching the World For Free (September 2020)
Insight
Khan: Foundational math video lessons are universally applicable and evergreen
“If once you have a good explanation of adding fractions with unlike denominators, pretty much everyone in the world could use it. And you don't really have to refresh it unless you figure out a better way of explaining adding fractions with unlike, unlike deno…”
Sal Khan Dec 8, 2025 ▶ 31:36 Khan Academy: Sal Khan. From Tutoring His Cousins to Teaching the World For Free (September 2020)
Insight
Khan: Real learning requires interactive exercises with feedback, not just videos
“Videos are nice, and I want to keep making videos. I really enjoy that. I want to translate it into the languages of the world. But the real learning happens when students are able to work on exercises, get immediate feedback. Ideally, teachers and parents can…”
Sal Khan Dec 8, 2025 ▶ 51:44 Khan Academy: Sal Khan. From Tutoring His Cousins to Teaching the World For Free (September 2020)
Insight
Khan: Asynchronous learning relies on student trust in a consistent instructor
“Education, even when it's done in this kind of distance way or asynchronous, you have to really trust your teacher. You have to trust that they're going to get me to some place that I know is going to be insightful and there's going to be an aha moment.”
Sal Khan Dec 8, 2025 ▶ 1:05:31 Khan Academy: Sal Khan. From Tutoring His Cousins to Teaching the World For Free (September 2020)
Assertion Not checkable as stated
Khan: Khanmigo costs $10 to $15 per month per user to run
“Conmigo has a very real marginal cost to it. It costs on the order of let's call it 10 to 15 dollars per month.”
Sal Khan Jul 27, 2023 ▶ 26:53 When AI is your personal tutor with Sal Khan of Khan Academy
Disclosure
Khan would consider a for-profit spin-out if foundation funding dried up
“The only reason That I could ever see trying to do some type of spin out or a wholly owned sub that's, is for some reason, if we're not getting the risk capital from the foundations, or we can't create a flywheel of sustainability, then maybe certain pieces of…”
Sal Khan Jul 27, 2023 ▶ 28:51 When AI is your personal tutor with Sal Khan of Khan Academy
Assertion Partly supported
Khan: Khan Academy costs $60M to $70M annually to operate
“It costs On the order of 60, seventy million a year to run Khan Academy, both to, you know, just our server costs are six, seven million dollars a year, and then obviously all of the engineers, et cetera”
Sal Khan Jul 27, 2023 ▶ 25:43 When AI is your personal tutor with Sal Khan of Khan Academy
Insight
Real learning requires interactive exercises with immediate feedback, not just videos
“Videos are nice and I want to keep making videos. I really enjoy that. I want to translate it into the languages of the world, but the real learning happens when students are able to work on exercises, get immediate feedback.”
Sal Khan Sep 21, 2020 ▶ 54:44 Khan Academy: Sal Khan
Assertion Not checkable as stated
Ann Doerr wired Sal Khan $100,000 after their first lunch meeting
“10 minutes later, I'm driving into my driveway, and I get a text message from Ann, and it says, you really need to be supporting yourself. I've just wired you a 100,000 dollars.”
Sal Khan Sep 21, 2020 ▶ 56:10 Khan Academy: Sal Khan
Insight
Foundational math and science lessons are evergreen universal content
“And I started to realize, you know, this type of thing, especially math, and I was doing math and I started doing some physics and chemistry and biology as well. It's pretty evergreen content. If once you have a good explanation of adding fractions with unlike…”
Sal Khan Sep 21, 2020 ▶ 33:28 Khan Academy: Sal Khan
Assertion Supported
Philanthropist Ann Doerr wired Sal Khan $100,000 to cover his living expenses
“I'm driving into my driveway, and I get a text message from Ann, and it says, you really need to be supporting yourself. I've just wired you a 100,000 dollars.”
Sal Khan Dec 8, 2025 ▶ 53:10 Khan Academy: Sal Khan. From Tutoring His Cousins to Teaching the World For Free (September 2020)
Assertion Not checkable as stated
How remote tutoring moved Sal Khan's cousin from remedial to advanced math
“And the same Nadia who was only a few months ago put into a remedial class was now put into an advanced math class.”
Sal Khan Dec 8, 2025 ▶ 23:56 Khan Academy: Sal Khan. From Tutoring His Cousins to Teaching the World For Free (September 2020)
Assertion Supported
The College Board pays Khan Academy to create free SAT prep
“Over time, the relationship has evolved where they actually pay us resources to create free test prep which is, you know, that's the type of revenue I love because it's, it helps sustain us, but it's free to the student.”
Sal Khan Dec 8, 2025 ▶ 1:08:28 Khan Academy: Sal Khan. From Tutoring His Cousins to Teaching the World For Free (September 2020)
Assertion Supported
Khan Academy reached hundreds of thousands of regular users by 2009
“And by 2007, 2008, it was in the tens of thousands of people. And by 2009, it was in the hundreds of thousands of people were using it on our, on a regular basis.”
Sal Khan Dec 8, 2025 ▶ 36:12 Khan Academy: Sal Khan. From Tutoring His Cousins to Teaching the World For Free (September 2020)
Assertion Not checkable as stated
Khan Academy was rejected by roughly 20 major foundations before securing funding
“By this point, have been rejected by so many major foundations, probably about 20 of them,”
Sal Khan Dec 8, 2025 ▶ 52:01 Khan Academy: Sal Khan. From Tutoring His Cousins to Teaching the World For Free (September 2020)
Assertion Not checkable as stated
Khan: 1M district students pay Khan Academy roughly $10 annually
“We now have about a million students in districts where they're paying on the order of about 10 dollars per student per year, To get all of these other things.”
Sal Khan Jul 27, 2023 ▶ 26:19 When AI is your personal tutor with Sal Khan of Khan Academy
Assertion Supported
Khan: Khan Academy daily usage surged from 30M to 90M minutes in March 2020
“Our traffic went from about thirty million learning minutes per day to about ninety million learning minutes per day, pretty much within that week.”
Sal Khan Jul 27, 2023 ▶ 1:29 When AI is your personal tutor with Sal Khan of Khan Academy
Disclosure
Khan: Khanmigo Deploys a Second AI to Flag Safety Issues to Parents
“We have a second artificial intelligence that monitors conversations with the main artificial intelligence. And if any of those conversations go into a gray zone then it actively notifies the parents and the teachers that, hey, you should take a look at this c…”
Sal Khan Jul 27, 2023 ▶ 14:51 When AI is your personal tutor with Sal Khan of Khan Academy
Disclosure
Khan: Khanmigo AI evaluates math reasoning by comparing hidden expected steps
“One of the things we've done to make it more robust on the math side is when a student presents their math to the AI saying, hey, I think this is the next step, the AI behind the scenes comes up with what it thinks are reasonable responses from the student. It…”
Sal Khan Jul 27, 2023 ▶ 17:55 When AI is your personal tutor with Sal Khan of Khan Academy
Disclosure
Khan Academy gave 40 to 50 employees early access to GPT-4
“The first thing we did is we sat in an org-wide NDA, and I said, hey, how many folks in the organization can I get, we give access to? And eventually we got about 40 or 50 folks in our organization to get access to GPT-IV.”
Sal Khan Jul 27, 2023 ▶ 11:03 When AI is your personal tutor with Sal Khan of Khan Academy
What-if
If I became a billionaire, I would have funded Khan Academy anyway
“And anything above that, if I did become a billionaire, I frankly would have donated it to an effort like Khan Academy. So you might as well just cut out the middleman, you know, just time shift it and work on it.”
Sal Khan Sep 21, 2020 ▶ 1:17:33 Khan Academy: Sal Khan
Disclosure
Khan initially burned $5K monthly in savings while raising hundreds in donations
“I did have this little donate button on, on my website, and there were people starting to donate. It was amounting to a few hundred dollars every month. If it was anyone listening, you'll thank you for that, but it But we were digging into our savings about fi…”
Sal Khan Sep 21, 2020 ▶ 46:30 Khan Academy: Sal Khan
Assertion Contradicted
Khan Academy had hundreds of thousands of regular users by 2009
“By fall of 2009, there were several 100,000 folks who were using The stuff I was making on a regular basis.”
Sal Khan Sep 21, 2020 ▶ 42:58 Khan Academy: Sal Khan
Assertion Not checkable as stated
COVID-19 surged Khan Academy's monthly traffic from 20M to 30M students
“You know, we normally see about, pre-COVID, it was about twenty million students were coming per month, and that increased to thirty million, and then they were also spending 50% more Time on the site. and then, you know, our registrations went through the ro…”
Sal Khan Sep 21, 2020 ▶ 1:14:18 Khan Academy: Sal Khan
Assertion Partly supported
Sal Khan personally produces almost all Khan Academy math and science videos
“Now, you know, we don't have a lot of folks making videos. I still make A lot of them. I pretty much make all of the math and science video. And then we have a few other folks who are doing some history videos and some language arts videos.”
Sal Khan Sep 21, 2020 ▶ 1:09:11 Khan Academy: Sal Khan
Disclosure
The College Board pays Khan Academy to create free SAT prep
“Over time, the relationship has evolved where they actually pay us resources to create free test prep which is, you know, that's the type of revenue I love because it's, it helps sustain us, but it's free to the student.”
Sal Khan Sep 21, 2020 ▶ 1:12:22 Khan Academy: Sal Khan
Disclosure
Khan Academy generates $5M from individual donors averaging $20 to $30
“About five million of our funding comes from a few 100,000 people donating on average 20, 30 dollars”
Sal Khan Sep 21, 2020 ▶ 1:14:52 Khan Academy: Sal Khan
Assertion Not checkable as stated
Khan Academy was initially rejected by roughly 20 major foundations
“By this point have been rejected by so many major foundations, probably about 20 of them.”
Sal Khan Sep 21, 2020 ▶ 55:02 Khan Academy: Sal Khan
Assertion Partly supported
Google and the Gates Foundation granted $4M to Khan Academy in 2010
“And by fall of 2010, both the Google and the Gates Foundation each gave about two million dollars. So we had a four million dollar initial funding for that first two years to hire up a team, internationalize, and start scaling Khan Academy.”
Sal Khan Sep 21, 2020 ▶ 1:04:10 Khan Academy: Sal Khan
Disclosure
Khan Academy's 2020 annual operating budget reached the high fifty millions
“Our annual operating budget now is in the high fifty millions, which every time I say it gives me a cortisol spike.”
Sal Khan Sep 21, 2020 ▶ 1:14:45 Khan Academy: Sal Khan
Assertion Partly supported
Sal Khan still creates nearly all Khan Academy math and science videos
“I pretty much make all of the math and science video, and then we have a few other folks who are doing some history videos and some language arts videos.”
Sal Khan Dec 8, 2025 ▶ 1:05:23 Khan Academy: Sal Khan. From Tutoring His Cousins to Teaching the World For Free (September 2020)
Made with StarZero

Turn any episode into a week of clips.

This entire site, over 800 episodes transcribed, diarized, checked and made playable, runs on the StarZero media pipeline. Drop in your own episode and the podcast clipper finds the moments worth sharing, cuts them, captions them, and reframes them for every feed.