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.
why aren't all 21 resolved? a statement only gets an assessment when the public record can support or contradict it. opinions and what-ifs never can, and 0 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
AI will widen the performance gap between good and lazy engineers
“I do believe that AI will do only one thing. It will Separate faster the good engineers from the bad engineers. If you're a good engineer, and you're using AI well, you will be an amazing engineer. If you're a poor, lazy engineer, and you don't want to underst…”
Pure technical moats are gone; UX is now the only differentiator
“In the world where the technical moat is not that a moat anymore, because Like startups in two weeks, they can build something that is close to what you're building. The difference is like the, how you think about the user or the flow and all of that.”
Claude Sonnet outperforms OpenAI on agent handoffs and reducing laziness
“Sonnet was really great for, like agent head off. Like the laziness was really great. OpenAI version of it was not that good.”
Apple's local on-device iOS AI capabilities have been underwhelming so far
“IOS has done some work there, but it was underwhelming so far.”
Houssier: Human EAs will always beat LLMs on interpersonal context
“And this is where your EA will always be better than an LLM because she knows the type of people you are okay to have lunch with, or maybe they have the context because, ah.”
Web browsers will become thinner and eventually embed directly into the OS
“I think the browser would be like more and more thin. I believe they would be like thinner and thinner, but they will disappear or they would be like just embedded in the OS eventually.”
Superhuman views OpenAI and ChatGPT as direct competitors in productivity
“Oh, the answer is like ChatGPT, or like OpenAI and superhuman are competitors. Like this is what we fight against to some extent.”
Superhuman engineers grew pull request throughput from four to six per week
“In Q one, we were roughly set at four PR per engineer per week. In Q one, in Q two, we were closer to five PR per engineer per week, and in Q three, we're closer to six. So the global throughput, and again, PR per engineer per week, we can debate, but that's a…”
Houssier: European digital signature compliance requires completely separate software stacks
“It sounds crazy, but like you want to nail Europe. You need a different product. You need a different team to your local data centers because of the compliance. You cannot just run your data centers from the U.S. So you need a local team there. Oh, and by the …”
DocuSign built physical on-prem appliances that wipe cryptographic keys if shaken
“There's a DocuSign box. Acquisition made in Tel Aviv at the time. Wonderful people building like security appliance and where like you shake the box. The keys disappear. Like if someone is like stealing your box, no one can sign in your name.”
Houssier: AI agents that hand trivial choices back to users waste time
“And I don't need, typically, the agent to say, hey, I found this lot, and this lot, which one do you prefer? I just asked for 15 minutes. Find it. Do it. I have an admin, when I was asking her, like, on Slack, find me 15 minutes. She's not asking me if I need,…”
Houssier: Switching between agentic frameworks will become increasingly difficult
“It's still easy to switch from one hatcheting framework to the other. But at some point I think it will be harder and harder and like the stickiness of them will be tricky.”
Superhuman builds dynamic on-the-fly aggregation lambdas with Anthropic
“We're working right now with Anthropic to basically do kind of like a building on the fly, small, kind of a key component of lambdas that will build the code to do the aggregation.”
Houssier: Superhuman starts with top models before optimizing inference cost
“We would always start with the highest and more expensive model. To get the right quality. And when the quality is nailed, then we can spend time trying to optimize.”
Houssier: Grammarly captures cross-app context that ChatGPT cannot access
“Grammarly knows, basically, where you, I say, you're switching from Google Doc to Salesforce. To LinkedIn, and now you're writing an email. So we have this augmented context even more, so like much more precise compared to something like ChatGPT, for example. …”
Superhuman operates with 50 engineers and roughly 100,000 paying users
“Superhuman may, like, we have 50. 50 engineers. And your user base is roughly a million? Yeah, like, less than that. Like paying users probably 100,000.”
DocuSign's French acquisition required a six-month defense contract carve-out
“And we were working for the Department of Defense in France. So we had the Ministry of Finance in France basically saying, no way, no go, you cannot sell. So we had to do a carve out which is like the funniest acquisition type you can do. So you have your team…”
Superhuman CTO: Ask AI uses agentic paginated search across email batches
“So we had to implement the pagination search. So like semantic search for like the first, I would say, 40 and deep search. Not that one. Okay. Next 40, next 40. So I'm kind of like using this agentic loop, and while you don't have find the answer, continue and…”
Superhuman uses Turbopuffer on the backend to store search vector embeddings
“We use a Turbo Puffer on the back end to store like .”
Superhuman uses Baseten to run LLaMA and BERT classification models
“We use Base-Ten to run some I would say some LAMA, some BERT model for classification.”
Houssier: Superhuman testing beta auto-drafting meeting availability in emails
“Right now it's in beta. But right now my emails, like internally, when someone is asking, hello, can we meet next week for lunch? Automatically I will have like three slots proposed in the draft and I can just like send the draft that is prepared for me.”