Accessibility

Last reviewed: 12 August 2026

This site should work for you, regardless of how you navigate it. The target is WCAG 2.2 at level AA. If something falls short of that, I want to know.

What the site supports

• Keyboard navigation, visible focus, skip links, semantic headings, and landmarks.
• Text alternatives and intrinsic dimensions for published images.
• Responsive layouts, text resizing, dark and light themes, and reduced-motion preferences.
• Forms with programmatic labels, stated requirements, and live status feedback.
• Video facades that avoid loading a third-party player until you choose to play a recording.

Current limitations

Some older linked PDFs, audio recordings, archived pages, and third-party media were not created or controlled by this site and may not meet the same standard. The interactive brain viewer and some Playground experiments present complex visual information; text instructions and keyboard controls are provided where practical, but equivalent access may still be incomplete. Automated checks help find defects, but do not by themselves establish full conformance.

Report a problem

If something prevents you from using the site, please get in touch. Choose “Collaboration or feedback”, tell me which page gave you trouble and what you were trying to do, and mention the browser or assistive technology if you are comfortable doing so. A screenshot is helpful but never required.

Assessment and improvement

The site is checked during each complete build for document structure, control names, image alternatives, internal links, metadata, and generated-page integrity. Manual keyboard, screen-reader, zoom, contrast, motion, and device testing remain part of release review because machine checks cover only part of accessibility.