What we collect, in plain words.
Short version: reading the site collects nothing about you. We only hold information you choose to give us, and we use it for the purpose you gave it. Last updated 9 November 2026.
Who we are
Evolution Issues (evolutionissues.com) is operated by Vital-Fill (vital-fill.com), which is responsible for the personal information described here. Questions or requests: admin@vital-fill.com.
What stays on your device
Your Journey (pages you've visited, cards you've saved, and your notes) is stored in your browser's local storage under the key ei_journey_v2. It is never sent to us. Clearing your browser data, or using your browser's site settings, removes it. We don't use cookies for tracking or advertising, and we show no ads.
What you send us
The contact form
If you write to us, we receive your message, your email address, your name if you gave it, and the topic you chose. We use them to read and reply to you. Messages are delivered to our inbox and kept as long as they are useful for the conversation or for correcting the site. Spam protection briefly counts your submissions by a scrambled (hashed) form of your IP address, held in memory only, and not stored.
The Evidence Evaluator
When you ask the Evaluator to examine a paper, article or passage, the text of that source (or the link or DOI you gave) is sent to Anthropic's Claude API to be analysed. Please don't submit anything private, confidential or personal. The result is saved so the same source needn't be analysed twice, and after editorial review may appear in the public library. The source you submit is not attached to your name. To enforce monthly allowances and spending limits, we keep a log of each request with a hashed form of your IP address, the time and the cost. Anthropic handles API content under its own terms and privacy policy.
Supporting the site
Gifts are processed by the payment provider shown at checkout, under its own privacy policy. We don't receive or store your card details. We may see your name, email and amount so we can record and thank you for the gift.
What our servers see anyway
Like any website, the hosting service that delivers our pages handles technical details of each request, such as your IP address, browser type and the page requested, in standard server logs used for security and reliability. We don't use these logs to build profiles of readers, and we don't currently run analytics. If that changes, we will choose a privacy-respecting tool and update this page first.
Who we share it with
We don't sell personal information, and we don't share it for advertising. It reaches only the services that make the site work: our hosting provider, our email service (for contact messages), Cloudflare (its Turnstile check on the contact form, which tells people from bots and sees your IP address and browser details when you open that page), Anthropic (for Evaluator requests, as described above), and the payment provider (for gifts). We may disclose information if the law requires it.
Your choices
You can ask us what we hold about you, to correct it, or to delete it, by writing to admin@vital-fill.com. Depending on where you live, you may have further rights under laws such as the GDPR or the California Consumer Privacy Act, and we will honour them. Because your Journey lives only in your browser, you can delete it yourself at any time.
Children
The site is written for students, parents and teachers, but it isn't directed at children under 13, and we don't knowingly collect their information. If a child has written to us, let us know and we will delete the message.
Changes
If we change how we handle information, we will update this page and its date. Questions? Write to us.