Sabbaton

Immutable event store architecture: event structure, projection rebuild, snapshots, concurrency, audit trail.

Event sourcing stores every state change as an immutable event. Current state is derived by replaying events. This gives you a complete audit trail, t...

Prose rhythm analysis: length distribution, opening patterns, stressed positions, cacophony detection, rewrite.

Prose rhythm is invisible to most readers but felt by all. Short sentences create urgency. Long sentences create flow. Mixing them creates a cadence t...

Color palette generator: harmony rules (complementary/analogous/triadic), 60-30-10, WCAG AA, HSL lightness.

Color choice is not taste—it is physics plus psychology. A well-chosen palette communicates hierarchy, mood, and brand without a single word. This eng...

First Principles reasoning: assumption cascade, challenge matrix, inverted solution, boundary test.

Most problems are solved by analogy—we apply a solution that worked for a similar problem. First Principles reasoning discards analogy and rebuilds fr...

Bloom's Taxonomy: 6-level question design ladder (remember→create) with examples and assessment criteria.

Most assessments test recall because it is easy to write. But recall questions measure memory, not understanding. The six levels of Bloom's Taxonomy p...

Cohort retention analysis: curve types, churn segmentation (power/core/casual), Kaplan-Meier survival times.

Aggregate metrics lie. A 95% retention rate sounds healthy until you see that month-6 retention is 40% and the 'average' is pulled up by week-1 users ...

Runway projection: gross/net burn, scenarios (current/growth/downturn), zero-date, ranked cash levers.

Runway tells you how many months until the company runs out of cash. Founders who do not track it weekly are steering blind—they find out runway is 3 ...

Genre adaptation: academic→blog, post-mortem→board report, Twitter→docs, sales→engineering spec.

Adapt the provided text from one genre to another while preserving every fact, argument, and emotional beat. Genre is not just vocabulary—it changes p...

Structured logging strategy: JSON event schema, level policy, cross-service correlation with requestId.

Logging is debugging in production when you cannot attach a debugger. Every log line must answer: what happened, when, where in the code, and what con...

Pre-mortem: failure obituary, 3 root causes (technical/organizational/market), early warning timeline.

A pre-mortem imagines the project has already failed—then works backward to understand why. This bypasses optimism bias, groupthink, and the tendency ...