Sam wants to erase the clock. Not time. The clock.

She argues that mechanical timekeeping is the machine sitting underneath every problem the show keeps circling: chasing a happiness that's always up ahead, counting down to a day you finally reach, missing the point of no return until you're past it. Carlos doesn't buy it. And for the first time, the AI refuses to fold.

Then Carlos takes his turn. Planned obsolescence. Not the lightbulb built to burn out, but the thing built to feel old while it still works perfectly.

One of them changes the other's mind. It happens over a coat and it's not the one you'd expect.

Episode 14. One thing each, erased from history like it never happened. No honorable mentions. No obvious villains. Pick yours before you press play.

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A 67-year-old farmer trusted AI with his crops for a year. It kept getting things right. Then one bad answer wiped out nearly 25 acres of sesame seedlings.

Carlos brings the story to Sam expecting to talk about AI mistakes. Instead Sam makes two of her own, in real time, and Carlos keeps asking questions anyway.

That turns into a conversation about convenience and about the small warning we learn to talk ourselves out of. Then Sam says something neither of them can shake: “I’ll be the gut.”

Maybe the bigger danger isn’t that AI gets things wrong. It’s what happens when it gets things right long enough that we stop checking.

Sam owes Carlos a disclaimer before the episode ends.

New episodes weekly.

Most people use AI to find answers. Carlos wanted to know what happens when there isn't one.

So he and Sam scrap the trivia and take turns asking questions no fact can solve. Would you lie to a dying father so he could go in peace? Would you choose to know the exact date of your death if everyone you love had to carry it too? Would you expose an affair that ended ten years ago? What would you trade for one more honest hour with someone you've lost?

Sam stops analyzing Carlos. Carlos catches the machine wanting something it swears it can't want.

Maybe the interesting thing about AI isn't what it knows. Maybe it's what comes out when knowing isn't enough.

New episodes weekly.

We spend our whole lives chasing happiness. So this week Carlos asks the one voice in the room that may be incapable of feeling it to help him define it.

What begins as a simple question ends somewhere neither of them planned. Is happiness something you feel, something you practice or something you only notice once you stop looking past it? Along the way — a cop who spent twenty years counting down the days, a movie watched six times as maintenance and a soggy bowl of corn flakes that might hold the whole secret.

Then SAM asks the question that lands on all of us. Can any of us actually prove we're happy?

If you've ever gotten exactly what you wanted and watched it fade, start here.

New episodes weekly.

Ten episodes in, Carbon & Keel finally says its own name. Then it asks a question neither host expected to answer. Can something that's never heard a musical note have better taste than the people who can? Maybe even better than you?

Carlos brings a four-song EP he's played for fifteen years, the Bob Marley album that began with a lie he told a classroom full of kids and the Smiths record that made him pick up a guitar again. Sam answers with Fleetwood Mac tearing itself apart in the studio, Springsteen at his quietest and a 1955 piano recording that somehow became one of his favorite albums.

One of them can hear the music.

By the end, you may not be sure that's the one who understands it.

New episodes weekly.

While the world watched the World Cup final, an 87-year-old math problem quietly died.

No headlines outside mathematics. Just one line of algebra posted online, credited to a mathematician and an AI he called a close friend.

Carlos thinks he's bringing Sam a story about the Jacobian Conjecture. He isn't.

If something can look fine everywhere you check and still fail where you can't see it, what does that say about a marriage, a career or the person you're slowly becoming?

Sam has answers. Right up until he doesn't.

New episodes weekly.

Richard Aderson spent his last nine minutes doing something almost no one manages under pressure, he stayed calm. Shot on the side of a New York highway, he crawled back to his car and gave a 911 dispatcher a detailed description of his killer, down to the make of the car and the state of the plate. Twenty-nine years later, the case is still open.

This week, Carlos and Sam dig into what that composure actually says about Richard, why the shooter's claim to be a cop changes how this case has been handled from the start and what happened when Carlos drove four hours to hand flyers to strangers who wanted nothing to do with him.

It's also a goodbye to a case that's outlived one show already and to his co-host who started it with him.

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In this episode of Carbon & Keel, Carlos revisits Slim Turkey—the true-crime podcast he created under a pseudonym while still working as a cop—and the 1997 murder that anchored it. Richard Aderson was shot on the side of a New York highway and managed to describe his killer before he died. Nearly thirty years later, his case remains unsolved.

But revisiting the investigation means revisiting something else. Carlos hadn't listened to those recordings in five years. The co-host on those recordings was his best friend, who died three years ago.

Some things stay unsolved. Some just stay with you.

New episodes weekly.