Cookie Policy

Last updated: July 2026

In short: this site sets no tracking cookies. It stores exactly one thing in your browser — your answer to the cookie notice — and it loads analytics only if that answer is yes. No advertising pixels, no cross-site tracking, no data sold to anyone.

1. What cookies are

A cookie is a small file a website asks your browser to store and send back on later visits. Cookies are how sites remember a login, a preference, or that they have seen you before. Related technologies — local storage, session storage and tracking pixels — do similar things by different means, and this policy covers those too.

2. What this website stores

Essential — always. A single entry in your browser’s local storage, named efficient-consent, holding either accept or essential. It exists only to record your answer so that we stop asking. It contains no identifier, it is never transmitted to us or to anyone else, and it stays on your device until you clear it or change your answer. Storage used solely to honour a choice you made does not itself require consent.

Analytics — only if you accept. If you choose “Accept analytics”, we may load a privacy-respecting analytics tool to see which pages get read and which get ignored. Nothing of the kind is installed today. The consent gate is in place ahead of it, so that it cannot be switched on without your permission. When we do add one, this page will name it and describe what it records before it goes live.

Advertising — never. No advertising cookies, no remarketing pixels, no data brokers, no cross-site tracking. We run advertising for clients. We do not run it on you here.

Declining takes one click and sits next to the accept button rather than behind a settings menu. Ignoring the notice entirely has exactly the same effect as declining.

3. Changing your mind

Use the Cookie settings link in the footer of any page. It clears your stored answer and reopens the notice, so withdrawing consent costs the same single click as giving it. Clearing site data in your browser has the same effect.

4. Requests to other providers

Two resources are loaded from external services when the page opens. Neither sets a cookie, but both necessarily receive your IP address, because that is how a file reaches you:

  • Google Fonts — fonts.googleapis.com and fonts.gstatic.com, serving the typefaces.
  • jsDelivr — cdn.jsdelivr.net, serving the animation library the homepage uses.

These requests happen regardless of your analytics answer, because without them the page cannot render as designed. If you would rather they did not, a content blocker will stop them and the site still works: the type falls back to your system fonts, and the homepage renders its diagram in a static form instead of an animated one.

5. Server logs

Our host keeps standard access logs — IP address, requested file, timestamp, user agent — for security and diagnostics, for a short rolling period. These are not cookies, they are not affected by your consent choice, and they are not used to profile you. See the Privacy Policy for how that data is handled.

6. Controlling cookies yourself

Every major browser lets you view, block and delete cookies and site data, usually under Settings › Privacy. Blocking storage entirely means we cannot remember your answer, so the notice will appear again on each visit — that is the only consequence here.

7. Contact

Questions about this policy: .