Ben Rady and Matt Godbolt

Two's Complement

If you come to a fork in the road, take it! Two’s Complement is a programming podcast, hosted by Matt Godbolt and Ben Rady; two programmers who both grew up wanting to make video games. One of them did, one of them didn’t, but now they both work together despite coming from very different backgrounds.

Author

Ben Rady and Matt Godbolt

Category

Technology

Podcast website

www.twoscomplement.org

Latest episode

Jul 10, 2026

Where to listen?

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Episodes

Never Twice the Same Color 10.07.2026

Matt records from the wrong continent and explains how he taught his computer to be a 1950s television. Ben guesses his way to the secret of the colo(u?)r burst and wins today's podcast.

Programming in English 14.06.2026

Ben sets out to learn Rust by only reading it, while Matt wonders if you can learn to land a plane from a book. Also: is snark a portmanteau?

The Rabbit Was Always There 25.05.2026

Ben asks what happens when you curl google.com, and Matt peels back HTTP until the rabbit turns out to have been in the hat all along. Then a USB hub stages a dramatic intervention.

Speed of Thought 11.04.2026

Ben has stopped talking to Claude directly. Matt hasn't opened his editor in days. They try to work out whether this is fun, programming, or a very expensive slot machine.

Measure Twice, Optimize Once 09.03.2026

Ben asks a simple question about performance and Matt talks for 46 minutes. The one true use case for linked lists is revealed, and a part three is threatened.

How Fast Is Fast? 14.02.2026

Ben interviews Matt with a deceptively simple question: make my program go fast. 44 minutes later, robot dogs are falling over, Grace Hopper's wire makes an appearance, and Matt still hasn't gotten the job.

Gaming on Linux 10.01.2026

Ben wipes his PC over Thanksgiving and installs Ubuntu for gaming. Matt recalls the dark days of himem.sys and IRQ conflicts. The universe was created last Thursday, and someone gets a hangover.

Factorio 06.12.2025

Ben's new TCP backpressure explanation: conveyor belts full. Matt zooms out and mistakes his factory for a Pentium 2. Ben plans to switch to Linux gaming; Matt's start bar keeps popping up and he's had it.

Vibe Coding and Robot Teammates 13.11.2025

Ben worries replacing juniors with LLMs creates a future hiring crisis - who'll train the robot-wranglers? Matt blames COVID brain fog, then proves it by botching NP-completeness. Capitalism is bad at escaping local minima.

Conference Talks: Some Assembly Required 12.10.2025

Matt returns from CppCon with a cold, three talks, and a keynote title Reddit hates. Ben immediately declares Reddit dumb. The hosts discuss C++ reflection, the unforgivable renaming of the Sears Tower, and why conference attendees should stand like Pac-Man.

Running Programs 12.09.2025

Matt and Ben discuss running in production; from running processes in screen to battling systemd configuration files. Ben sketches out daemonization rituals while Matt channels Tolkien to explain process hierarchies. Our hosts discover that Ansible playbooks are just bash scripts with better PR, and everyone still Googles journalctl syntax.

Squashing Compilers 10.08.2025

Matt uses you as his therapist to vent about three days fighting systemd and boot time. Ben patiently listens while Matt explains why mounting things shouldn't consume 200% CPU. AWS sponsorship news provides a silver lining.

The Benefits of Experience 18.07.2025

Matt and Ben explore how experience lets you run across water instead of drowning in options. Ben explains why he doesn't need a life preserver when building software. Matt retrofits good practices into Compiler Explorer while lamenting decisions from 10 years ago.

Is Football Possible Anymore? 12.06.2025

Ben recounts his 2007 startup building a database chatbot (before LLMs were cool). Matt tries their methods live with Claude. Ben foolishly uses his phone as a microphone stand.

C++ and Rust: Different Tools for the Job 09.05.2025

Matt and Ben discuss programming language debates sparked by an old talk that went viral. They explore how Matt's C++ safety tips convinced someone to switch to Rust instead. Matt stays up all night trying four different implementations to prove a point, then loses. Ben introduces the concept of "carpet bubbles" in language design. Matt lists all the C++ features that begin with C, while Ben quest...

Observable Metrics 10.04.2025

Matt and Ben explore the intersection of testing, metrics, and observability in performance-critical code. They debate push vs pull metric systems, share war stories from financial trading systems, and ponder what to do when your program can't tell anyone it's in trouble.

Pair Programming with HAL? 16.03.2025

Matt and Ben explore the new world of AI-assisted coding: is it like pairing with junior developer? Matt gets the recording working the second time, Ben worries about what happens when your business depends on code you don't understand.

Passing Messages 14.02.2025

Ben and Matt wade into the deep waters of messaging systems, get utterly lost in time synchronization rabbit holes, and discover their new podcast tagline: "We make mistakes so you don't have to." Matt celebrates by getting his car stuck where cars shouldn't go.

Getting CRUFTy 12.01.2025

Ben unveils his latest acronym-based software discussion framework while Matt patiently waits for the punchline. Our hosts explore alternatives to technical debt, debate the value of naming things, and Matt questions his ability to remember five letters for more than fourteen minutes. Ben has written a blog post going into more detail since the recording.

Are We Remotely Productive? 14.12.2024

Matt and Ben unpack the mysteries of remote work and programmer productivity, with a side of two's complement philosophy. Featuring unexpected insights, hallway chat nostalgia, and the radical notion that writing less code might actually be winning.

Are Dirty Hands Right? 23.11.2024

Matt and Ben preach the gospel of "dirty hands are right," then spend 30 minutes explaining why that's completely wrong unless you're the right person, with the right skills, at the right time, working on the right thing. Also, don't cook chicken with dirty hands.

Sequence Locks 26.10.2024

Matt talks about a work thing, called a sequence lock. Ben suggests some dumb ideas about that work thing. Then our hosts discuss how to starve a reader, anger the Gods of Volatility, and invoke Sylvester Stallone.

The Joy of Programming 11.09.2024

Matt and Ben realize they love their jobs, and decide to keep doing them. Flow state, to the point where it makes people uncomfortable, is discussed. Also toilet humor. Ben makes an unintentional Sesame Street reference. Matt recalls his level 70 cleric.

Deploy First Development 17.08.2024

Our hosts congratulate themselves on finally having decent microphones. Matt quizzes Ben on his "Deploy First" approach to software development. Ben explains branch-based deployment environments. He assures Matt he's a mortal. Matt promises to be less rubbish.

Programming Under Pressure 21.07.2024

Ben and Matt come up with a podcast on the spot, which they do every month but also this month too. Our hosts discuss on-call rotations, fighting (virtual) fires, and working to meet deadlines at the mercy of the world. Ben says the letter 'P' a lot. Matt's brain freezes, but he's OK.

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