Marc (@vallver) header
Marc (@vallver) profile picture

12 years running ops, now run product & AI. I build with AI and write about what it changes in how a business runs.

London
Joined October 2021
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I started a newsletter: While You Were Working Every Thursday — one AI development that actually matters for your business. Explored properly. → The Signal: what happened and why it matters → The So What: 2-3 things you can do THIS week → Quick Hits: other developments worth 30 seconds No prompt tips. No tool listicles. Just what I'd tell another operator over coffee. I run ops at a 1,000-person company. This is the AI newsletter I wished existed. Subscribe: wyww.substack.com
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My padel directory agents kept writing "contact the club for prices" on club pages Useless if you're trying to choose where to play. Told them to go and find the actual prices and booking conditions instead The directory is at 271 clubs now
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First proper result from my walking maps thing: Russell Square to Somerset House Fastest route is 19 minutes. The quieter one is 21 and keeps you further from the busy roads
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Between Microsoft and the FAA, it's a bad time to be a copilot
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Trying some new style references with my current obsession
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Gave the research agents on my padel site one rule: no fact goes in without the exact quote from the page it came from The club's own website was basically empty. Everything useful was on its booking page Prices and access details got held back because no page actually said them
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Stolen from threads is a wild community note
Currently at a wedding. Whole table is drunk. We hatched an evil plan to see how close to the bar we can scoot our table with out being discovered. As a group we lift the table and scoot an inch at a time. We’ve gone 6 inches so far but the night is young.
Readers added context they thought people might want to know
Stolen post from Threads threads.com/share/__oBic3aE
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Built a walking maps thing that finds you a prettier or a quieter route if you give it a few extra minutes Haven't walked one yet. How many extra minutes would you actually give it?
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Closed my price drop alert test this week It never flagged a drop worth sending to anyone. Then a £44 drop showed up after I'd switched it off
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The hardest part of scaling an org isn't strategy. It's repeating the exact same context in 8 different meetings just to make sure people are working off the same reality. Most leadership time isn't decision-making. It's human sync latency.
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Tuesday I asked if anyone ever made a game like Pokemon Snap Ended up building one. Same idea, you ride through on a fixed track and take photos Binned the agent's first go at the visuals and made it rebuild them properly
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Crocodiles are the new moat
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Finding it harder and harder to get proper work done remotely Feels like you either build the company as ICs who work async, or as one team that sits together
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Every company is going to have to run about 70% cheaper across every team Hard to see how anyone survives otherwise
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The hidden tax of building with AI isn't the model price. It's context switching between five different tools that all have their own memory, quirks, and versions of the truth. Half the job is just keeping the agents aligned on what you're actually building.
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My explanation for this is that before, it made no sense to hire a PM unless you had at least 4-5 engineers ready to build with them, now that 1 engineer can deliver enough value directly, the PM layer can add more value independently. Also when it comes to growth rates, obviously the # of PM roles is much smaller than engineers so you'll see greater growth
Narrative violation: Product managers are benefiting most in the AI era There’s been a lot of talk about AI replacing product managers (“who needs ’em!”). But so far, the data is showing the exact opposite. There are more open PM roles than at any point in nearly four years, up 75% from the March 2023 low, and PM openings have grown faster than any other core product role since the start of 2023. More here: lennysnewsletter.com/i/22420…
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Brainstorming with the new models is weird Ask for options and they pick one and spend the rest of the answer defending it
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Can we talk about the absolute tragedy that is drinking coffee with one of these lids on? Bring back plastic
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El gobierno pidiendo huelga
📺 TV EN DIRECTO | Bustinduy hace un "llamamiento a los trabajadores para que secunden la huelga de mañana". "Todos los derechos de la clase trabadora se han conquistado luchando y haciendo huelgas" social.elpais.com/rhcr4
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Truly the town square
Finally… I’m back. A new chapter is being born. Love.
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You know you are old and have different priorities when 80 hours is the worst possible thing in a job
If you are interested joining us in London/SF for 80+ hrs a week working on... > persistent memory over longitudinal health data > realtime voice > jev decision cascades > self-healing agent loops > tool-calling eval harnesses for 350k+ users ...leave a comment below!
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