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488 times, this atlas has written down a gap it could not close and named what would close it. Most, 465, are still open. Twenty one have been resolved, and two were withdrawn outright, closed not by an answer but by the discovery that the question itself did not hold up.

A Question That Was Never Really a Question

The clearest withdrawal was not a mistake in the world, it was a mistake in the asking. A question about who first claimed the discovery of a chemical element under the name russium turned out to rest on confusion: russium was a 1925 claim on a different element entirely, later attributed to an ordinary radioactive form of potassium, and the element the question actually meant to ask about already has two documented, genuine early claims on record elsewhere in this atlas. Nothing was added to that element's page, because on the specific point the question raised, there was nothing missing to add. Recognising that a gap does not exist is its own kind of progress, and this atlas records it as one rather than pretending the question was never asked.

The Twenty Six Questions One Answer Closed

The most efficient resolution on record did not answer a question so much as repair how twenty six related ones were being asked. Each letter of the Theban alphabet carried its own open question about where its particular sign came from, all twenty six missing the same middle step, a check of whether anyone had actually investigated the alphabet's traditional attribution. A search turned one up: a scholar's published introduction to a related manuscript that traced the attribution as far as it can currently be traced and no further. That investigation is now recorded in its own right, and the shared question it answers is asked once, on the alphabet as a whole, instead of twenty six times over on twenty six separate letters.

Where To Read More

• AstatineHalogenThe element the withdrawn russium question was mistakenly asked about
• FranciumAlkali MetalThe element the 1925 russium claim actually concerned
• ThebanMagical AlphabetsWhose 26 letters each carried the question one resolution answered at once