Privacy Policy

Introduction

This policy explains how The Leman Paradox ("we", "us", "our") collects, uses and protects your information when you visit the site.

What we collect

Email. If you write to us, whether to say hello, to claim an idea or to ask a question, we keep your email address and the content of your message so we can reply. Claims also go through the form on the board, and messages through the form on the contact page: both land in the same inbox.

Newsletter. The subscribe.exe window collects the address you type so we can send one email per new idea. The list is held by EmailOctopus. You can leave from any newsletter email, or write to us and we take you off by hand.

Ripples. If you tell us you are building one of the ideas, we publish the name or alias you give us, your project link, and the line you wrote about it. Nothing else, and nothing you did not send us. Ask us and we take it down.

Certificate of Authenticity. If you find every undocumented device on this machine, a certificate window offers to register you. If you submit it, we keep the name or alias you give us, your favourite device, the sentence you wrote, an optional site, and the product key this browser generated. The submission also carries the anonymous identifier that PostHog assigned to this browser: the key is derived from it, and it is how we check that a completed hunt is genuine. We link it to nothing else. Same inbox as the claims, same rule: ask us and we take it down. You can skip the form and write to us instead.

Favourites. The star counter counts each browser once. The first time you star an idea, your browser draws a random identifier and keeps it. Each star sends it along, and our server stores only a hash of it, for as long as your star is counted. Removing the star deletes it. Your IP address plays no part in it. If you clear your browser's storage, the stars you placed before stay counted.

Technical. This site writes no cookies at all. Your reading preferences (text size, highlights, sound, desktop colour) stay in your own browser, on your own machine, and never leave it. The same goes for what the assistant remembers: the number and date of your visits, and your answers to its holiday questions. It uses them to greet you; it never sends them anywhere, and they are not measured. The local log of undocumented devices you have found stays on this machine too, with two exceptions: analytics counts each discovery once, by its code name (see below), and the certificate form sends the list along if you submit it. We do not sell your data and we run no advertising trackers.

Where it lives. Claims, contact messages, certificates and the favourites counter are stored in a Redis database hosted by Upstash. The inboxes only keep their most recent entries: the last 2,000 claims, the last 1,000 messages and the last 1,000 certificates. Ask us and we delete yours right away. The site and its small server functions run on Vercel, which keeps standard access logs (IP address, browser) for a short time. To block abuse, those functions also keep a one-minute counter of requests per IP address (per network block, for IPv6).

Analytics

We use PostHog to understand how the site is used. It runs on their European infrastructure, so the data stays in the EU. We have configured it deliberately narrowly:

• No cookies. PostHog is set to browser storage only, so nothing is written to a cookie and nothing follows you to another site.
• No session recording. We never see your screen, your mouse or your typing.
• No automatic capture. Only a short list of events we chose is recorded: which pages are read, how far down an article people get, which buttons get clicked (claiming an idea, subscribing, opening a link), which undocumented devices on the machine people discover (a coded name, counted once per browser), and whether the registry is completed or the certificate is submitted. The form fields themselves are not sent to analytics. Nothing you type in a search box or the Run dialog is ever collected.

The point is to know which ideas people actually read and which ones make them want to build something. Nothing here identifies you personally.

How we use it

• To respond to what you send us;
• To send the newsletter to people who asked for it;
• To publish the ripples readers ask us to publish;
• To reply to people who register a completed hunt;
• To see which ideas are read and which ones get built;
• To keep the site fast and secure.

Your rights

You can ask us to access or delete the personal data we hold about you, or to remove your project from the board, at any time. Just get in touch.