From vibe coding to software engineering

Four problems every growing project runs into

SISDEVIA assumes agents can be wrong.

• The project forgets

  Decisions, constraints, and context can get lost between conversations and sessions, so the same ground has to be rediscovered again and again.

  Context drift · Durable project state

• Agents can be wrong

  An agent saying a task is finished does not mean the result was actually verified.

  Independent verification

• Fast changes create hidden risk

  A change that looks correct in isolation can quietly break something else, or drift the product away from what it was meant to be.

  Change impact · Architectural drift

• Human supervision does not scale linearly

  Agents can produce hours of engineering work in minutes; reviewing every micro-action by hand stops scaling long before the software does.

  Governed autonomy · Human authority

Conversations are temporary. The project should not be.

Intent, decisions, architecture, constraints, context, history, and evidence belong to the project -- not to any one open conversation.

What stays with the project, not the conversation:

• Intent
• Decisions
• Architecture
• Constraints
• Context
• History
• Evidence

Durable project state

Engineering principles, not just output

SISDEVIA is built around a set of properties that matter more as software grows, not around any single trick for generating code.

• Durable project state
• Controlled change
• Explicit engineering decisions
• Specialized AI agents
• Coordination across responsibilities
• Independent verification
• Evidence-backed progress
• Preservation of human intent
• Human authority
• Bounded autonomy
• Observability
• Reproducibility
• Traceability
• Risk-proportional rigor
• Maintainability at scale

Foundation models, agent runtimes, and SISDEVIA

Better agents make SISDEVIA more capable -- not obsolete.

1. Foundation models
2. Agent runtimes (Claude Code · Codex · …)
3. SISDEVIA -- engineering state · governance · verification · continuity
4. Software

Vibe coding vs. SISDEVIA

These aren't competitors. They answer different questions at different points in a project's life.

Most real products need both, just at different times.

Vibe coding is genuinely excellent for prototypes, experiments, and small or disposable software. The problem shows up once a product accumulates users, architecture, data, dependencies, and consequences. SISDEVIA does not apply the same weight to every project -- rigor scales with a project's maturity and risk, and a small project like this site is treated accordingly.

Selected project

The first real project with public material ready to show. More will be added here as they become ready to publish -- never as a placeholder.

• Forecast Arena

  Forecast Arena is a forecasting engine that evaluates and selects statistical and machine-learning models for different prediction horizons using reproducible backtesting on real public time-series data. It also runs human-vs-system forecasting challenges under the same information constraints.

  LIVEVisit Forecast Arena