The Four Treasures of the Study (文房四寶; ぶんぼうしほう) are the tools needed for Chinese or Japanese calligraphy. Here are the four treasures written in Kanji (Japanese for Chinese characters) and in Hirag…

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And again with this one. Maybe these types of diagrams are clearer with a few arrows. We’ll see! Please continue (re-)reading below: <>

After creating the diagram for my last post, and appreciating the little arrows, I thought I would redo the diagram for this earlier post. No change in the text, so instead of duplicating the old p…

Every physics undergraduate (and science buff) learns about the arrow of time: entropy increases, disorder accumulates, the universe runs down. It is the directionality that explains why eggs don&#…

Bushido was a moral code followed by the Samurai class that arose during the Edo period of Japan. The origins of this ethos are generally agreed to be a syncretism arising from various religious an…

Further Reading: V1, from back a ways: The Square of Opposition A database of Aristotelian and logic diagrams including many recent ones: Thanks for the nudge to do this V2 : <>

Further Reading: Thanks for the inspiration: This image [*2.41, *3.25, *3.26, *3.27, *5.54] <>

The alethiometer, an important fictional artifact in Philip Pullman’s two fantasy trilogies His Dark Materials and The Book of Dust, is a “truth-telling” device that might well ha…

I’ve been wanting to post about the Yoneda Lemma of Category Theory for a while, and finally decided how to draw my little diagram. Next, I will sketch out the fundamentals of the lemm…

On the Doomsday Clock, it is 85 seconds before midnight! Tick… tick… tick… tick… Further reading: Home page for the Bulletin of the Atomic Scientists: 2026 Doomsday Clock Announcement: Complete Liv…

Fox began warning customers Monday that its channels could be pulled from YouTube TV on Wednesday unless they reach a new deal soon.

In today’s post, I want to explore what I have been thinking of as the Cybernetics of Kindness. In my recent reflections, I have been drawn to the quiet power of compassion and kindness, part…

A compelling book about degrowth that, well, grows on you, Less is More patiently but firmly explores why capitalism isn’t working out for us and what we should focus on instead.

The SSA’s shift to Elon Musk’s X comes as the agency plans to cut its regional office workforce by roughly 90 percent, WIRED has learned.

The SSA's shift to Elon Musk's X comes as the agency plans to cut its regional office workforce by roughly 90 percent, WIRED has learned.

The SSA's shift to Elon Musk's X comes as the agency plans to cut its regional office workforce by roughly 90 percent, WIRED has learned.

The Biggest Ideas in the Universe: Space, Time, and Motion - Kindle edition by Carroll, Sean M. . Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading The Biggest Ideas in the Universe: Space, Time, and Motion.

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New SEC filings from pharmaceutical companies reveal Donald Trump and Elon Musk's cost-cutting measures could slow drug research and delay FDA approvals.

The defense secretary’s instructions, which were given before President Trump’s blowup with the Ukrainian president, are apparently part of an effort to draw Russia into talks on the war.

The defense secretary’s instructions, which were given before President Trump’s blowup with the Ukrainian president, are apparently part of an effort to draw Russia into talks on the war.

It comes as RFK Jr., a vaccine skeptic who now leads the Department of Health and Human Services, makes moves that could affect vaccination uptake and policy.

The cancellation plays into fears among scientists who worry that Robert F. Kennedy Jr. will use his position as health secretary to sow doubts about vaccines.

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The president's remarks were ripped as "morally disgusting" by Yale history professor Timothy Snyder, who is an expert on authoritarianism.

The remarks by President Volodymyr Zelensky of Ukraine were some of his most pointed yet about President Trump’s views on the war.

“This kind of cut would kill American science and boost China.”…

By proving a broader version of Hilbert’s famous 10th problem, two groups of mathematicians have expanded the realm of mathematical unknowability.

If you are a current or former career Bureau of the Fiscal Service Employee, especially if you’re a legacy IT programmer with years of experience and especially if you are a COBOL programmer currently...