# Haruki Yano / Haruma-K (@harumak_11) on x

- id: koinon:creator:x_harumak_11
- url: https://koinonlink.com/kol/x/harumak_11
- schema_version: 1.4

## Identity
- platform: x
- handle: harumak_11
- platform_url: https://twitter.com/harumak_11
- website: http://light11.hatenadiary.com/
- country: Japan
- entity_type: creator
- person_id: Cross-platform identity not resolved for this creator.

## Reach
- followers: 4025
- following: 536
- posts_total: 3800
- posts_observed: 14
- posts_per_day: 1.193
- account_age_days: 3184
- verified: true
- size_tier: nano

## Engagement
- status: peak_post_only
- peak_post_engagement_rate: 0.00944
- best_post_interactions: 38
- measurement_source: x_post_interactions
- measurement_formula: interactions on one post — likes, or likes + reposts + replies depending on the discovery path (the two are not distinguishable in the stored data)
- comparable_pool: peak_interactions
- status_note: We have only the single best observed post, so no mean exists. peak_post_engagement_rate is an UPPER BOUND, systematically higher than an average — never compare it against an average rate.
- unit_note: engagement_rate and peak_post_engagement_rate are ratios (0-1); avg_interactions_per_post and best_post_interactions are absolute counts. Read status before reading any number: a null rate has several different causes and status says which one applies here.

## Content
- category: software
- subcategory: ai_tools
- category_confidence: 0.9
- category_source: derived_from_recent_content
- topics: AI in software development workflows, Technical debt from AI-generated code, Balancing AI adoption with engineering sustainability, Case studies of AI implementation in engineering teams, Unity engine development practices
- bio: Unityエンジニア
・note「設計と実践」: https://t.co/oL5KsFd40k
・技術ブログ: https://t.co/HGdcEzU8kW
・GitHub: https://t.co/pgcuVnK3kk
・CyberAgent

## Audience (inferred)
- status: present
- description: Unity engineers and game developers interested in AI integration in software development, particularly those dealing with practical implementation challenges
- roles: dev
- seniority: practitioner
- pain_points: Struggling with the technical debt and maintenance burden caused by rapid AI-generated code, Frustrated by the lack of sustainable workflows when adopting AI tools without proper process alignment, Balancing pressure to adopt AI for competitiveness against concerns about system stability and code quality
- posts_analysed: 7
- confidence: 0.4

## Commercial (inferred)
- audience_buyer_fit: 0.9
- promotion_intent: 0.7
- open_to_collaboration: false
- contact: Koinon does not publish creator contact details.

## Quality signals
- authenticity_score: 79
- authenticity_basis: engagement_observed
- credibility_score: 79
- flagged_for_review: false
- koinon_bd_grade: A — measures Koinon partner-outreach fit, not creator quality
- interpretation: Signals for triage, not verdicts. A flag means the profile is worth a manual check.

## Evidence
- [x_harumak_11#9e890489] AI推進派とAI懐疑派の対立とその解決策についての記事 (https://twitter.com/harumak_11/status/2069990214290776315)
- [x_harumak_11#bda3d687] https://t.co/GEaJBor5yt
- [x_harumak_11#44ae6e63] ・あるカンファレンスでAIによるコード生成によって難題を解決したという素晴らしい発表があったが、裏では別のチームが何ヶ月も後片付けに追われる惨状になっていた
- [x_harumak_11#08704c5b] ・AIを使わないと競争に負けて会社が存続できなくなるという推進派の主張も、エンジニアが読めない速度でコードをリリースするとシステムが崩壊するという懐疑派の主張も、どちらも正しい
- [x_harumak_11#ae1050a9] ・推進派は成功だけを体験し、懐疑派は後片付けのコストだけを体験しているため、両者の間に自然なフィードバックループが存在せず、深い分断が生まれている
- [x_harumak_11#8d49a1f1] ・Fin（旧Intercom）という組織では、9ヶ月で生産性を3倍に引き上げ、バグのバックログを半分に減らすなど飛躍的な成果を出した
- [x_harumak_11#3bc70938] ・この成功はAIが魔法だったからではなく、彼らが元々持っていた高いエンジニ

## Provenance
Every inferred field below carries how it was produced. Facts stay facts; inferences stay inferences.

- audience.description: source_type=ai_inferred, confidence=0.4, freshness_days=20, method=llm_persona_from_recent_content
- audience.roles: source_type=ai_inferred, confidence=0.4, freshness_days=20, method=llm_persona_from_recent_content
- audience.seniority: source_type=ai_inferred, confidence=0.4, freshness_days=20, method=llm_persona_from_recent_content
- commercial.audience_buyer_fit: source_type=ai_inferred, confidence=0.6, freshness_days=79, method=llm_scorer — Relative signal within Koinon indexing, not a market-wide score.
- commercial.promotion_intent: source_type=ai_inferred, confidence=0.6, freshness_days=79, method=llm_scorer
- quality.anomaly_flags: source_type=heuristic, confidence=0.5, freshness_days=108, method=profile_snapshot_and_engagement_ratio_heuristic — Means "worth a manual check", NOT confirmed fraud. Flags can be wrong and are not a verdict about the person.
- quality.authenticity_score: source_type=heuristic, confidence=0.5, freshness_days=79, method=Profile-shape heuristic from a single snapshot (follower count, following ratio, account age, posting volume, verification), reduced for engagement red flags where post engagement was collected. Where only a follower count is available the score saturates at 58. — The input set differs by platform; do not compare this score across platforms.
- quality.koinon_bd_grade: source_type=ai_inferred, confidence=0.5, freshness_days=108, method=llm_partner_fit_classifier + fit_score >= 0.6 AND authenticity >= 60 => A; fit_score >= 0.4 AND authenticity >= 45 => B; else C. authenticity < 30 or a promotional-pattern flag => quarantine. — Koinon partner-outreach fit, not creator quality.
- reach.followers: source_type=observed, confidence=0.95, freshness_days=108, method=platform_profile

## Freshness
- profile_checked_days_ago: 108
- content_analysed_days_ago: 79
- audience_updated_days_ago: 20

## AI retrieval
- indexing_requests: 11
- user_triggered_requests: 0
- note: Being indexed in bulk is not the same as being retrieved to answer a question.

## This profile
- Claim or correct: https://koinonlink.com/claim?k=x_harumak_11
- Request removal: https://koinonlink.com/claim?k=x_harumak_11
- Terms: https://koinonlink.com/for-ai