Jimmy Nilsson's Post — reflections after the Thoughtworks 'Future of Software Development' retreat

Jimmy Nilsson · article · 2026-07-07 source ↗ Reader 🖥️

Agentic Engineering Agile & XP Coding Agents Extreme Humanism Software Design Fundamentals Test-Driven Development Trunk-Based & Continuous Delivery

Reflecting on Thoughtworks' 'Future of Software Development' retreat, the author reports that leading practitioners have moved past the hype-versus-doom polarisation about agentic coding toward nuanced 'when, where and how' thinking, converging on the view that enduring engineering fundamentals (DDD, XP, TOC, TDD, BDD, CD) plus a renewed 'Extreme Humanism' matter more than ever in the agentic age — which is why he is optimistic.

mixed · mixed — A brief first-person social-media reflection reporting the mood and consensus of an invited retreat, blending descriptive reportage with a few lightly-normative positions; not an argued essay.

Structure

Part	Role
Optimistic framing and disclaimer	Sets the emotional register (inspired, energized, optimistic) and frames the post as quick, undigested first impressions with more to follow
The '25' / Agile Manifesto anniversary	Notes that despite marking 25 years of the Agile Manifesto, 'agile' was never mentioned because it is internalised and the focus was on the future
Nuance over polarisation + enduring fundamentals	Reports that discussions were balanced ('when, where and how') and that the classic fundamentals are seen as more important than ever, while acknowledging enormous challenges
Extreme Humanism	Gives a second reason for optimism: participants saw the need to be 'conspicuously human'
Teaser and close (individuals and interactions)	Anticipates forthcoming articles from participants and closes on the Agile-Manifesto echo that the individuals and interactions were the essential thing, with thanks to Thoughtworks

Key terms

Extreme Humanism / conspicuously human
A recognised need, voiced by several participants, to deliberately amplify the distinctly human dimension of software work as coding is increasingly automated
the fundamentals (DDD, XP, TOC, TDD, BDD, CD)
The set of long-standing engineering disciplines the author 'always come[s] back to', held to be more important than ever in the agentic age
when, where and how
The nuanced, situational framing that replaced blanket judgements about agentic coding at the retreat
individuals and interactions
The human element of the gathering, which the author says was 'the thing' — an explicit echo of the first value of the Agile Manifesto

Propositions

explicitAt the retreat, discussion of agentic coding was nuanced and balanced — centred on when, where and how to use it — rather than the common polarisation between treating it as the worst evil or the universal solution.conf: high
explicitdevelopedThe enduring engineering fundamentals the author keeps returning to (DDD, XP, TOC, TDD, BDD, CD) are and will be more important than ever in the agentic age.conf: medium
extends ←Software Design in the Agentic Age: Placing Your Bets · p1 — Supplies the concrete causal mechanisms (token cost, context-window sensitivity, human debugging needs, LLM code mimicry) that nilsson-fose-linkedin's 'fundamentals matter more than ever' claim left unstated.
implicitAgile is no longer explicitly discussed among these practitioners because it was internalised long ago, and attention has shifted entirely to the future.conf: medium
explicitA recognised ingredient of a healthy agentic-age future is 'Extreme Humanism' — being 'conspicuously human'.conf: medium
explicitThe shift to agentic software development brings enormous challenges on several levels, but progress on them begins with understanding.conf: medium
implicitThe individuals and interactions — the human element — were the most valuable part of the gathering, and (by the Agile-Manifesto echo) of the work itself.conf: medium

Arguments

The future of software development in the agentic age warrants optimism. strength: low

Explicit premises:

At the retreat the discourse on agentic coding was nuanced and balanced rather than polarised.
Participants held that enduring engineering fundamentals (DDD, XP, TOC, TDD, BDD, CD) will be more important than ever.
Several participants recognised the need for 'Extreme Humanism' / being conspicuously human.
The individuals and interactions — the human element — were the most valuable part of the gathering.

Implicit premises:

A mature, balanced discourse among leading practitioners is a good predictor of a healthy trajectory for the field.
Grounding in durable fundamentals plus a deliberate focus on the human dimension mitigates the risks of agentic coding.

Inferences:

Because the leading conversation is mature, grounded in durable fundamentals, and human-centred, the direction of travel for software development is positive.

Narratives

The retreat's image showed a '25' marking 25 years since the Agile Manifesto, yet the author is 'not sure I heard the word "agile" once' during the workshop.
→ Signals that agile has been fully internalised and that the frontier of attention has moved on to the agentic future rather than to methodology labels.

Questions addressed

✅ Does the rise of agentic coding call for despair or uncritical enthusiasm?
Neither — the productive stance is nuanced 'when, where and how', moving past the evil-versus-panacea polarisation.
✅ Does agentic AI make traditional software-engineering fundamentals obsolete?
No — participants reportedly agreed they are and will be more important than ever.
⭕ What should anchor software work as coding is increasingly automated?
The human element — 'Extreme Humanism', 'conspicuously human', and 'individuals and interactions'.

Gaps

incomplete'Extreme Humanism' / 'conspicuously human' is invoked as a key reason for optimism but is never defined or operationalised — we do not learn what it means concretely or how to practise it.
Read next: Seek the participant's fuller articulation of the phrase and humanist/craft-centred treatments of AI-augmented development.
incompleteThe claim that the fundamentals (DDD, XP, TDD, CD, …) are 'more important than ever' is asserted as a shared opinion with acknowledged confirmation bias but no argument or evidence; the mechanism by which agentic coding raises their value is left unstated.
Read next: Read practitioner arguments linking AI coding assistance to the renewed value of design discipline, fast feedback, and continuous delivery.
closed bySoftware Design in the Agentic Age: Placing Your Bets — Supplies the concrete causal mechanisms nilsson-fose-linkedin's claim left unstated for why DDD/XP/TDD/CD-style fundamentals matter more under agentic coding: LLM context-window and token-cost sensitivity to complexity, humans needing to debug unfamiliar agent-written code, and LLMs mimicking/reinforcing existing code patterns rather than independently improving them.
incompleteThe 'enormous challenges on several levels' are asserted but none are named or characterised, so the counterweight to the optimism is left empty.
Read next: Look for the promised follow-up articles and other retreat participants' write-ups that detail the specific challenges.
illogicalThe optimism generalises from a self-selected, invited in-group whose consensus the author admits aligns with his own confirmation bias, without testing the conclusions against dissenting or sceptical views.
Read next: Seek out principled sceptical and critical positions on agentic coding to counterbalance the in-group consensus.