Fable Opus GPT-5.5 Gemini

The model doesn't matter.

Harness Platform Tools Framework
The transition to building with AI
What is my craft now? What happens to the part we love? What does the job even become?
Hank
“I'll believe it when it stops breaking.”
Ada
“What can AI do this week that it couldn't last week?”
Brian Casel
“I miss writing Ruby. But love gaining leverage.”
@casjam ·
brian@buildermethods.com
The bigger picture

## Our role is climbing.

AI can't climb this alone.

Vision
Systems design
Direction
Strategy
Judgment
Wiring plumbing
Typing code
2024
AI meets our codebase
2024
2025
2026
2027
2024
→
⇥ Tab
2024
→
⇥ Tab
Hank
Stuck to hand-coding.
No exposure to AI.
Ada
Gaining speed.
Learning AI's limits.
Sees where it's going.
2025
Collaborating with AI
2024
2025
2026
2027
2025 Spec-driven development
20%planning
80%building
→
80%planning
20%building
2025 Adoption gap widens
Hank
Dabbling with AI for some tasks.
Out of step with changing process.
Ada
Shipping speed gains.
Hones spec skill → Trust in model output.
New challenge: QA bottlenecks…
2026
Normalizing building with AI.
2024
2025
2026
2027

I don't write code anymore.

(I miss it)

Experience
Architecture patterns Product design Dev process Systems thinking
→
Leverage
Better specs Predictable output Verification loops Agentic systems
2026 Normalizing building with AI
Pattern 1
Remove the scaffolds
Better models = Leaner tools.
Pattern 2
Platform-agnostic
Keep workflows portable.
Pattern 3
Embrace multi-agent
Multi-tasking with worktrees
2027
Addressing AI bottlenecks
2024
2025
2026
2027
2027 Loop-based building
Task
Build
Verify
Fix
Design & build loops
Task
Build
Verify
Fix
2027 Embracing restraint?

## Just because we can, doesn't mean we should.

Task
Build
Verify
Fix
Design & build loops
Task
Build
Verify
Fix

The model doesn't matter.

We do.

## Let's connect.

buildermethods.com
brian@buildermethods.com
@casjam
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