From XP to TCR & Limbo • Kent Beck & Daniel Terhorst-North • GOTO 2025

This interview was recorded for GOTO Unscripted. #GOTOcon #GOTOunscripted
gotopia.tech/

Read the full transcription of this interview here:
gotopia.tech/articles/355

Kent Beck - Software Engineer & Creator of Extreme Programming ‪@KentLBeck‬
Daniel Terhorst-North - Originator of Behavior Driven Development (BDD) & Principal at Dan North & Associates ‪@daniel-terhorst-north‬

RESOURCES
Kent
bsky.app/profile/kentbeck.bsky.social
www.kentbeck.com/
github.com/KentBeck
twitter.com/KentBeck
www.linkedin.com/in/kentbeck

Daniel
bsky.app/profile/tastapod.com
twitter.com/tastapod
www.linkedin.com/in/tastapod
github.com/tastapod
mastodon.social/@tastapod
dannorth.net/blog

Links
   • The Best Programmer I Know • Daniel Terhor...  
   • REPLs All The Way Up: A Rubric For Better ...  
   • Tidy First? A Daily Exercise in Empirical ...  
   • 3X Explore, Expand, Extract • Kent Beck • ...  
   • How to Deliver Quality Software Against Al...  
   • X Marks the Spot: Navigating Possible Futu...  
   • Panel: Where Is SW Development Going? • Fo...  
   • Test Driven Development: That’s Not What W...  
   • When Test Driven Development Goes Wrong • ...  
   • Psychology, Philosophy & Programming • Ted...  

DESCRIPTION
Kent Beck and Daniel Terhorst-North reflect on the evolution of Extreme Programming (XP) and its lasting impact on agile software development. They explore the importance of short feedback loops, iterative learning, and adaptability in different phases of product development, as outlined in Beck’s 3X model (Exploration, Expansion, Extraction).

Kent introduces radical techniques like Test && Commit || Revert (TCR) and Limbo, which challenge traditional coding and collaboration practices by emphasizing tiny, safe iterations. The conversation ties in psychological safety, a key factor in high-performing teams, as outlined by Amy C. Edmondson.

Kent envisions a future where software development scales in real-time, pushing teams to embrace faster experimentation, responsibility, and continuous learning in a rapidly evolving tech landscape.

TIMECODES
00:00 Intro
00:53 Extreme Programming (XP)
03:09 The power of feedback & Continuous Delivery
07:44 Evolution of XP: From practices to people
11:39 3X Model: Managing risk through software evolution
25:02 TCR, Limbo & the future of software development
33:28 The importance of psychological safety for high-performing teams
39:32 Outro

RECOMMENDED BOOKS
Kent Beck • Tidy First? • amzn.to/4gscjjK
Kent Beck & Cynthia Andres • Extreme Programming Explained • amzn.to/3sBASDG
Amy C. Edmondson • The Fearless Organization • amzn.to/3Q5QPxu
Amy C. Edmondson • Right Kind of Wrong • amzn.to/3CRbiTD
Jez Humble & David Farley • Continuous Delivery • amzn.to/452ZRky

bsky.app/profile/gotocon.com
twitter.com/GOTOcon
www.linkedin.com/company/goto-
www.instagram.com/goto_con
www.facebook.com/GOTOConferences
#XP #EmpiricalDesign #ExtremeProgramming #Explore #Expand #Extract #3X #TDD #TCR #Limbo #PsychologicalSafety #Programming #SoftwareEngineering #KentBeck #DanNorth #DanielTerhorstNorth

CHANNEL MEMBERSHIP BONUS
Join this channel to get early access to videos & other perks:
youtube.com/channel/UCs_tLP3AiwYKwdUHpltJPuA/join

Looking for a unique learning experience?
Attend the next GOTO conference near you! Get your ticket at gotopia.tech/
Sign up for updates and specials at gotopia.tech/newsletter

SUBSCRIBE TO OUR CHANNEL - new videos posted almost daily.
youtube.com/user/GotoConferences/?sub_confirmation…