| CARVIEW |
Select Language
HTTP/2 200
date: Thu, 22 Jan 2026 09:18:05 GMT
content-type: text/html; charset=utf-8
content-encoding: gzip
cf-ray: 9c1df63ce8c35359-BLR
cf-cache-status: EXPIRED
cache-control: no-cache
link: ; rel=preconnect
set-cookie: ab_experiment_sampled=%22false%22; Max-Age=31536000; Domain=substack.com; Path=/; Expires=Fri, 22 Jan 2027 09:18:05 GMT; HttpOnly; Secure; SameSite=Lax
set-cookie: ab_testing_id=%22211b0968-feed-4658-a949-cab34288b23d%22; Max-Age=31536000; Domain=substack.com; Path=/; Expires=Fri, 22 Jan 2027 09:18:05 GMT; HttpOnly; Secure; SameSite=Lax
set-cookie: __cf_bm=p.KzoYgFN5.6Grk8h5rdtGqw52ttMpWxLZFgzaBDKpI-1769073485-1.0.1.1-MkDYcu72vi.SSbZUcmdcbyiFnvGDTBzKvxczbTFwax1SHBKfbzHVulnNDyy5hpW5DarP.wxH9GBsV8pq5D1_Vr17NekVBoz2zgeXhGa46kM; path=/; expires=Thu, 22-Jan-26 09:48:05 GMT; domain=.substack.com; HttpOnly; Secure; SameSite=None
strict-transport-security: max-age=31536000; includeSubDomains; preload
vary: Accept-Encoding
content-security-policy: frame-ancestors 'self' https://*.substack.com https://substack.com
x-cluster: substack
x-deploy: 70bbe58d08
x-powered-by: Express
x-served-by: Substack
x-service: web
x-sub: leahy
server: cloudflare
alt-svc: h3=":443"; ma=86400
Need to Know by Stephen Leahy | Substack
Need to Know by Stephen Leahy
Science & Insight to Help Navigate this Decade of Change & Consequence
Launched 5 years ago