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Life-Changing Concepts
A curated weekly newsletter delivering practical mental models designed to enhance business decision-making and strategy
since May 23, 2026 · HTTP 200
CohortClass of 2026What it is
A curated weekly newsletter delivering practical mental models designed to enhance business decision-making and strategy. Subscribers receive a foundational guide of 20 mental models upon joining, with ongoing insights to build competitive advantage.
HTTP liveness
13 probes since May 23May 23Jul 15
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- May 23, 2026First probe — redirectedRedirected offsite
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Pulse Indexobserved activity
13 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
550 products launched in 2026 · 100% still active
550 active0 sunset
Still active
100%
Median lifespan
4.9y