Answer 1
In terms of when to stop and pivot: PART II — THE COLD START PROBLEM
**Ch. 4 — Tiny Speck / Slack.** Tiny Speck spent 4 yrs 10 mo, raised $17M, hired 45 people on the multiplayer game **Glitch** — Butterfield: "97% who signed up would be out of there within five minutes" (leaky bucket). Relaunched as **Slack** → 20M DAU, ~1M businesses, exited to Salesforce for ~$26B, $800M+ revenue. Slack grew from an internal IRC-based "frankentool" (Slack = Searchable Log of All Conversation and Knowledge). **[BIZBUILDER]** Butterfield personally signed up 45 companies in private beta — "I just had friends at other companies" — and personally handled the …
Source: src/lib/bricks/sources/andrew-chen-cold-start-problem.md
Answer 2
In terms of when to stop and pivot: 5. Benchmark Reference Table
| Metric | Benchmark | Source | |--------|-----------|--------| | Hook rate (ideal) | 50% | Artemy, DDM conf | | Hook rate (acceptable) | 22-26% | Artemy, DDM conf | | Hook rate (kill threshold) | <15% | Artemy, DDM conf | | Video retention | 3.2-3.6 | Artemy, DDM conf | | Kling rework CPA improvement | ~20% | Artemy, DDM conf | | Kling rework volume needed | 20-30 variations per winner | Artemy, DDM conf | | Typical waste per missed kill signal | $3-16K per creative | Kirill, DDM conf | | Kill signal fires at | $100-$3K spend | Kirill, DDM conf | | Sasha subscription price…
Source: src/lib/bricks/sources/perf-marketing-playbook.md
Answer 3
In terms of when to stop and pivot: Framework-as-Diagnostic Overlay
Greg's 7-tactic framework overlaid on Yuri's current infra: | Tactic | Greg's framework says | We have | Verdict | |---|---|---|---| | 1. MCP server as sales team | Publish to Smithery/MCPT/OpenTools for $0 CAC discovery | Zero — neither BizBuilder/KPDD nor Solacian have an MCP server | **REAL GAP** — but applicability depends on whether the product answers a queryable question; Solacian (Maze-dissolving AI) plausibly does, KPDD (PMF discovery) plausibly does | | 2. Programmatic SEO at 10K-page scale | Next.js + Firecrawl + AI content for "best X for Y" patterns | Zero pro…
Source: src/lib/bricks/sources/greg-isenberg-bootstrap-distribution.md
Answer 4
In terms of when to stop and pivot: 1.3 Code-Generated Ad Creatives (Cody Schneider method)
Source: [[../knowledge-env/synthesized/marketing-machine-10-parallel-agents.md]] **When to use**: zero budget for design, need to test messaging variations (not visual polish), finding the winning angle/pain point before investing in production **Process**: 1. Pick a reference ad format (Facebook Ads Library for competitor research, or "before/after" template) 2. Claude Code builds the ad as a React component (1080x1080px) 3. Research pain points via Perplexity API (scrape Reddit, YouTube, Twitter for ICP language) 4. Bulk-generate text variations: titles + paragraphs map…
Source: src/lib/bricks/sources/perf-marketing-playbook.md
Answer 5
In terms of when to stop and pivot: PART III — THE TIPPING POINT
**Ch. 11 — Tinder (Tipping Point).** The Tipping Point = a **repeatable strategy** to launch network after network. Tinder: 2B+ swipes/day, 1M dates/week, $1B+ revenue. Dating has naturally high churn (happy couples leave). **[SOCIAL][BIZBUILDER] The USC party tactic:** the team threw an incredible birthday party for a hyperconnected friend; to get in you had to download the Tinder app (bouncer checked) — highest one-day download spike, but what mattered was it being "**500 of the right people**" — the most social, hyperconnected people, on Tinder at the same time. **95% of…
Source: src/lib/bricks/sources/andrew-chen-cold-start-problem.md
Answer 6
In terms of when to stop and pivot: 4.0 Forecast-First Creative Loop (Karpathy autoresearch pattern transfer)
Source: [[creative-autoresearch-loop-pattern-transfer.md]] | Raw: [[../knowledge-env/raw/2026-04-09-karpathy-autoresearch-source.md]] **When to use**: you want to generate hundreds of creative variations and SCORE them before spending real budget. Pairs with §1.5 (Apify mining) — mining gives the input data, this gives the experimentation engine. **Core pattern (transferred from Karpathy/autoresearch GitHub repo, 69K stars)**: - 3 files: `forecast.py` (READ-ONLY invariants — the metric the agent can't touch), `creative.py` (the only file the agent edits — generator config…
Source: src/lib/bricks/sources/perf-marketing-playbook.md
Answer 7
In terms of when to stop and pivot: PART IV: COMPLETE URL INDEX (120 Articles)
All URLs from sitemap, categorized by slug analysis: **Company Case Studies** (60+): airbnb, atlassian-jira, audible, barstool-sports, bereal, bloomberg, calendly, calm, cameo, canva, carswitch, cash-app, classpass, convertkit, curated, dating-apps, discord, donotpay, doopoll, doordash (x2), etsy, fatal-fight, fast, github, headway, instagram, journify, levelsfyi, linear, mixpanel, morning-brew, netflix, nike, notion, onlyfans, pageflows, postmates, product-hunt, reddit, ring, roam-research, robinhood, shopify, sketch, slice, snapchat (x2), snackpass, spotify, stitch-fix (…
Source: src/lib/bricks/sources/first1000-pmf-patterns-library.md