Why the World’s Best Mathematicians Are Hoarding Chalk – YouTube

Once upon a time, not long ago, the math world fell in love … with a chalk. But not just any chalk! This was Hagoromo: a Japanese brand so smooth, so perfect that some wondered if it was made from the tears of angels. Pencils down, please, as we tell the tale of a writing implement so irreplaceable, professors stockpiled it.

So many people sent this to me. For good reason, it’s fascinating and wonderful.

Why I’m Obsessed with Reading Books about Writing in Notebooks | The Washington Post

Why I’m Obsessed with Reading Books About Writing in Notebooks | The Washington Post

“Ideally, in your notebook, you get to invent your own language and systems, creating a self-contained bit of hardware and software just for you. But, especially for those of us who are rule-followers at heart, that can be a big leap, so perhaps it’s unsurprising that so many people are looking to experts for a little guidance on how to get started. All those rules about which bullets to use and when to migrate tasks and how to set up a new page are reassuring in their rigidity, but also encouraging in that you can easily adapt them to your preferences and needs. These systems promise to bring order and structure to your life but also give you the room to write your own code and change the rules as you go.”

Marie Curie’s Notebook

Marie Curie’s Notebook — CJ Chilvers

A look inside a notebook, on experiments from 1899-1902, still radioactive today (and will be 1500 years from today). This reminds me that paper notebooks are still the best format for archiving notes, and handwriting adds humanity to everything — including data collection. (via The Nobel Prize and NinjaEconomics)

If you want things to last for hundreds of years, and remain radioactive, you use paper.