Privacy & policies

Privacy and policies

This page says, in plain language, what this site collects, what happens to it, and how buying from the Shop works. Kaleidoscope Systems LLC runs this site. If anything here is unclear, write to me.

Last updated November 6, 2026

The short version

• We only collect what you choose to give us, like your email when you join the waitlist.
• No advertising, no tracking pixels, no analytics that follow you around.
• We never sell or rent your information.
• You can unsubscribe from any email, and ask us to delete what we hold about you.
• Shop items are instant downloads and can’t be refunded once downloaded. If a file is wrong or broken, we’ll make it right.

What we collect

Only what you type into a form on this site:

• Waitlist and newsletter: your email address, the page you signed up on, and, if you came from a link like Substack, the name of that link.
• Contact form: your name, email, the topic you chose, and your message.
• Founding enrollment: your name, email, and whether you’d like to beta test.
• Accessibility feedback: your message, the kind of feedback, and your email if you choose to give it.

When you buy something, the payment company collects your payment details. We never see or store your card number. We receive your name, email and what you bought.

Like almost every website, our hosting company keeps basic technical logs (such as IP addresses) to keep the site running and secure.

How it’s used

• To send you what you signed up for: launch news, updates, or a reply to your message.
• To deliver what you bought, and to help if something goes wrong with it.
• To keep records the law requires for sales.

We don’t use your information for advertising, and we don’t sell, rent or trade it. Every email we send has an unsubscribe link.

Services we use

A few trusted companies help run the site. Each has its own privacy policy.

• Netlify hosts this website and receives form submissions.
• Supabase stores our waitlist and email list.
• Payhip handles Shop purchases and download links.
• Stripe handles founding membership payments.
• Amazon sells our paperbacks and Kindle books. Those links take you to Amazon, and Amazon’s policies apply there.
• Substack hosts Sher’s newsletter, The Cognitive Ecologist. Links to it take you to Substack.

On your own device

Some choices you make here, like Reading support settings (text size, dark mode, the reading voice and speed), are saved in your own browser so they’re still there next time. They stay on your device and aren’t sent to us. You can clear them any time by clearing this site’s data in your browser.

We don’t use advertising or tracking cookies. The Shop page loads Payhip’s checkout, which may set its own cookies to process your purchase.

Your choices

• Stop emails: use the unsubscribe link at the bottom of any email.
• See, correct or delete your information: write to me and I’ll take care of it. Some sales records have to be kept for tax purposes.

This site isn’t directed at children under 13, and we don’t knowingly collect their information.

Shop downloads and refunds

Everything in the Shop on this site is a digital download (PDF). You get the file straight away, so:

• Digital downloads can’t be refunded once downloaded. Please read What’s inside on each item before you buy. It lists the format, page count and contents.
• If your file is broken, missing, or not what the description says, write to me within 30 days. I’ll send the correct file, and if I can’t fix it, I’ll refund you.
• Bought the same thing twice by accident? Let me know and I’ll refund the duplicate.

Downloads are for your own personal use. Please don’t resell or post the files publicly.

Paperbacks and Kindle books bought on Amazon follow Amazon’s return policy. For a paperback mailed by me, ask here and we’ll sort out the details together.

Founding memberships

Founding memberships are paid through Stripe. If you have a question about your founding membership or a payment, write to me and I’ll help.

Changes and contact

If this page changes, the date at the top will change too. For anything about your privacy, a purchase, or this page, use the contact form.