If I remember right, the idea is that writing on paper has several kinesthetic properties: the feel of the pen and the paper, the smell, the way the notebook lo

If I remember right, the idea is that writing on paper has several kinesthetic properties: the feel of the pen and the paper, the smell, the way the notebook looks on the table, with the current location lighting, etc etc. There’s also the relatively slower, more physical act of actually writing by hand. Brains normally form memories with all that data wrapped in. Typing on a screen it’s all kind of the same, compared to how different each physical writing experience feels. Those differences give your brain more “texture” to work with in forming a distinct memory and giving you hooks to recall it later. If you’re interested in this stuff, there’s a very entertaining book about memory called “Moonwalking with Einstein,” which I highly recommend :)