--- title: "Echoes" canonical: "https://current.tinyfish.ai/issue/18/echoes" publication: "TinyFish" publisher: "TinyFish" language: "en-US" guide: "https://current.tinyfish.ai/llms.txt" permalink: "https://current.tinyfish.ai/issue/18/echoes" issue: 18 section: "echoes" description: "Past infrastructure decisions echoing in today's production realities" authors: ["Rina Takahashi"] published: 2026-03-02 updated: 2026-02-26 articles: 11 --- # TinyFish > CURRENT is a journal about AI agents in production, for the engineering and product leaders who have to make them work. Drawing on experience building enterprise web agents, it explains why the demo succeeded and the deployment didn't, and what that means for choosing vendors, briefing the board, and avoiding mistakes others have already made. [Read on the website]() ## Issue 18 — Echoes Past infrastructure decisions echoing in today's production realities ### The Persistent State - [The Cookie That Couldn't Be Killed]() — By [Rina Takahashi]() · Published 2026-02-25 · Format: The Persistent State In 1994, a Netscape engineer needed websites to remember shopping carts. He made three small design choices: cookies would set silently, persist across sessions, and be readable across sites. Practical, almost obvious. Those same three properties turned out to be the exact foundation that behavioral advertising would later require at scale. By the time anyone tried to undo them, the cookie was load-bearing for an industry worth hundreds of billions of dollars. Google spent five years trying. The story of what happened is also the story of why it couldn't. ### The Replacement Nobody Wanted - [Google's Privacy Sandbox Asked an Industry to Volunteer for Worse Outcomes. The Industry Declined.]() — Published 2026-02-25 Google spent six years engineering a replacement for third-party cookies. The Privacy Sandbox moved ad targeting onto the device through Topics API, Protected Audience, and Attribution Reporting. Technically functional. Also, by every independent measure, significantly less capable than what it replaced. ### The Shopping Cart Fix - [We Solved a Shopping Cart Problem — A Fictional Interview About the Birth of the Cookie]() — Published 2026-02-25 *Dex Pokorny is not a real person. He is, however, a plausible one — a composite drawn from documented accounts of Netscape's engineering team in 1994, built to carry a true story in a voice that belongs to no one in particular and could belong to several people who were actually there. The technical history is real. The opinions are invented. The bewilderment is probably accurate.* ### Compounding Consequences - [The Consent Layer That Can't Keep Up]() — By [Rina Takahashi]() · Published 2026-02-25 · Format: Compounding Consequences A session-state mechanism from 1994 sits beneath a $900 million compliance industry. Cookie consent banners interrupt every site visit in Europe, powered by platforms that largely fail at what they promise. Each regulatory layer was built to manage the consequences of the one before it. The regulation meant to finally clean up the whole structure was recently withdrawn. What remains is a stack of workarounds, still compounding. - [The Split Web]() — By [Rina Takahashi]() · Published 2026-02-25 · Format: Compounding Consequences The same mechanism also fractured the web along a seam most people never notice. Safari and Firefox block third-party cookies by default. Chrome does not. Which privacy architecture governs your browsing depends on which browser icon you tap. Advertisers now maintain parallel infrastructure for both regimes. The split exists because the original cookie was never replaced. Half the web removed it. The other half kept going. ### Further Threads - **The Reasoning Behind Web Cookies** — [Source]() — Published 2026-02-25 Montulli's own account of what cookies were designed to prevent, not enable. - **To Understand Where the Cookie Is Headed, Let's Look at Its History** — [Source]() — Published 2026-02-25 The IETF flagged the surveillance risk by 1997. Browsers made different choices. - **Google Ends Third-Party Cookie Phaseout Plans** — [Source]() — Published 2026-02-25 The institutional account of why antitrust pressure, not privacy strategy, ended the phaseout. - **Google's Privacy Sandbox Is Officially No Longer** — [Source]() — Published 2026-02-25 A sharp postmortem on why Sandbox satisfied neither privacy advocates nor advertisers. - **Cookie Compliance in 2026: Where GDPR Enforcement Stands Now** — [Source]() — Published 2026-02-25 Independent legal analysis of the widening gap between regulation and actual implementation. - **How Browsers Handle First and Third-Party Cookies** — [Source]() — Published 2026-02-25 Technical breakdown of the three-way browser split advertisers actually navigate today. ## Other sections in Issue 18 - [Daily Brief]() - [Market Pulse]() - [Foundations]() - [Practitioner's Corner]() - [Vision]() ## More - [Publication guide]() - [Issue archive]()