This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
Post
Observable
observablehq.com
did:plc:v7w63oyizwhmzkqpx3tjn5r6
We’ve been rebuilding the editor atop the foundation of Notebook Kit and portable files in an open format. You can’t necessarily tell yet, since there’s no button… but thanks to James for seeing it!
See also @nxrix.bsky.social’s remarkable depicted notebook: https://new.observablehq.com/@nxrix/binary-black-holes
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2026-08-04T11:01:17.565Z