Rubber duck debugging and CS50.ai's pedagogical guardrails

Dr. David J. Malan teaches computer science at Harvard. Over the past decade, millions of people have taken his CS50 course both in person and online. He joins us to talk about:

1. Why he still recommends learning the C programming language in 2026 2. How he intentionally nerfs hist student's coding editors and LLMs to help them learn fundamentals faster 3. His vision for self-paced learning, and how it improves on traditional university education 4. Where the software engineering field is heading in light of recent AI tool improvements

Links from our discussion:

- Teaching Computer Science with Theatricality: https://www.youtube.com/watch?v=AMiNIjePZlo - Teaching CS50 with AI: https://youtu.be/ggshaJcOc6Y Dr. Malan's paper on Academic Honesty in CS50: https://cs.harvard.edu/malan/publications/Teaching_Academic_Honesty_in_CS50.pdf - Dr. Malan's paper, Toward an Ungraded CS50: https://cs.harvard.edu/malan/publications/Toward_an_Ungraded_CS50.pdf - My 2019 interview with Dr. Malan and Colton Ogden, one of his CS50 instructors: https://www.freecodecamp.org/news/podcast-harvard-cs50s-david-malan-and-colton-ogden-on-computer-science/

Community news section:

1. Learn how cryptography works, and how developers use it to secure both data and communication. freeCodeCamp just published a course that will teach you Python functions for symmetric and asymmetric encryption. You'll learn about SHA-256, AES, RSA, and public / private keys as well. You'll even code your own command-line cryptography tool. (1 hour YouTube course): https://www.freecodecamp.org/news/cryptography-for-beginners-full-python-course-sha-256-aes-rsa-passwords/

2. freeCodeCamp also published a course on building your own 3D games that run in a browser using Three.js and Blender. You'll learn how to model characters, design levels, detect collisions, and make the camera follow your playable character. You'll even deploy your game to the cloud so your friends can play it. (6 hour YouTube course): https://www.freecodecamp.org/news/creative-web-development-with-threejs-and-blender/

3. Learn Event-Driven Architecture. freeCodeCamp published this advanced JavaScript handbook that will teach you about Event Loops, Task Queues, Call Stacks, Backpressure, Websockets, Pub/Sub, and more. Take your full stack development skills to the next level and be sure to share this with your developer friends. (full length handbook): https://www.freecodecamp.org/news/event-based-architectures-in-javascript-a-handbook-for-devs/

4. freeCodeCamp also published our first ever guitar course. You'll learn beginner music theory concepts like chords and scales. You'll then map them to the guitar fretboard. You'll also learn guitar-specific techniques like barre chords. I learned guitar during the pandemic and am having an absolute blast with it. I hope you will, too. (1 hour YouTube course): https://www.freecodecamp.org/news/guitar-theory-course-for-beginners-learn-fretboard-major-scale-and-triads

5. Check out the winner of this year's JS13k competition, Cat Strike. This cat stealth game was built using only 13 kilobytes of JavaScript, sound, assets, everything. You avenge your fallen human using wall climbing, rolling, meowing to distract, and of course, your claws. https://js13kgames.com/2025/games/clawstrike

Song of the Week: "Kiss Like Judas" by It Bites 1988: https://www.youtube.com/watch?v=LK4T8HnSdEI