I was curious about this passage from How to Take Smart Notes by Sönke Ahrens:

[Niklas] Luhmann's only real help was a housekeeper who cooked for him and his children during the week, not that extraordinary considering he had to raise three children on his own after his wife died early. Five warm meals a week of course do not explain the production of roughly 60 influential books and countless articles.

As I am still figuring out how to fit my thoughts around my 8-year-old's desire for my attention (wonderful, time-limited opportunity that it is), I wanted to understand more about what that domestic situation might have been like.

It took a bit of digging, but eventually I found out that Niklas Luhmann (1927-1998) and Ursula von Walter (couldn't find her birth year; I think she died in 1977, although some pages report 1971) had three children:

• Veronika Luhmann-Schröder (1961-)
• Clemens Luhmann (1963-)
• Jörg Luhmann (1963-)

which would've made them around 14-16 years (+/- a little, couldn't find months) old when their mother died in 1977. [source]​

So yeah, teenagers, whole 'nother kettle of fish.

The kiddo will be a teenager eventually and I'll miss these days, so I might as well make the most of them. Maybe reading/thinking/writing in small bits can help me still feel like I get to learn things I want to learn about, in addition to all the random Minecraft and Star Wars trivia I've been picking up. I am starting to be able to have a little more time to put together thoughts, so that's encouraging. Trust the process and just keep feeding the slipbox, people say. I hope I can get to it before things scramble my brain even further. We'll see in a few years.

Also, Niklas Luhmann's children ended up fighting for years in court over ownership and copyright,[source]​ particularly over his slipbox. He had transferred all his copyrights to Veronika in 1995 before his death in 1998 (71 years old) and didn't want his intellectual legacy split up, which the courts upheld in 2004.[source]​ It's tough when family fights over money, and even tougher if they're fighting for such a long time in the courts.

Anyway, still looking for more figures to learn from. Among other thoughts in the Art of Manliness podcast on treating your to-do list as a river, Oliver Burkeman pokes a little fun at the YouTube productivity influencer culture: "So much of that is dominated by young men who are still a few years away from having kids and telling you how to exactly nail your morning." He goes on to say that it's nice to have maybe 3 or 4 hours of focused time, but you shouldn't strive to be walled off and completely uninterruptible. It's good to be able to go with the flow. In A Room of One's Own, Virginia Woolf wrote about the challenges of chasing a fleeting idea, and the necessity for women to have your own money and a room with a lock on the door. Good Mom on Paper: Writers on Motherhood and Creativity felt mostly like people stretched almost to the point of breaking, but still managing to (mostly) survive thanks to the people around them.

I appreciate the homeschooling group we often hang out with. It's nice to know other people grappling with similar challenges.

I'm lucky that my thinking activities are discretionary. Neither food nor shelter depends on my being able to write code or think thoughts at this particular moment. I'm learning to go with the flow. I draft this as the kiddo is presumably sleeping in the other room. She had sent me off earlier with, "I think I'll try sleeping on my own tonight."

I want to start building up more thoughts as chunks and relating them more logically instead of just chronologically. I've been using categories to organize my posts into buckets, but within a category, it's still chronological. I also have a large outline that includes posts from 2017 to 2024. I'd like to break it up into smaller topic pages so that they're easier to link to, although it's a little more challenging to search.

Now that I have a nice gallery view for my visual book notes, I wanted to organize the book notes by topic. I made an async Eleventy paired shortcode called gallerylist that lets me turn a list of links into into thumbnails and links.

I also modified org-html-toc to not include the Table of Contents header and to tweak the HTML attributes assigned to it.

(defun my-org-html-toc (depth info &optional scope)
  "Build a table of contents.
DEPTH is an integer specifying the depth of the table.  INFO is
a plist used as a communication channel.  Optional argument SCOPE
is an element defining the scope of the table.  Return the table
of contents as a string, or nil if it is empty."
  (let ((toc-entries
   (mapcar (lambda (headline)
       (cons (org-html--format-toc-headline headline info)
       (org-export-get-relative-level headline info)))
     (org-export-collect-headlines info depth scope))))
    (when toc-entries
      (let* ((toc-id-counter (plist-get info :org-html--toc-counter))
             (toc (concat (format "<div class=\"text-table-of-contents toc-id%s\" role=\"doc-toc\">"
                                  (if toc-id-counter (format "-%d" toc-id-counter) ""))
        (org-html--toc-text toc-entries)
        "</div>\n")))
        (plist-put info :org-html--toc-counter (1+ (or toc-id-counter 0)))
  (if scope toc
    (let ((outer-tag (if (org-html--html5-fancy-p info)
             "nav"
           "div")))
      (concat (format "<%s class=\"table-of-contents toc-id%s\" role=\"doc-toc\">\n"
                            outer-tag
                            (if toc-id-counter (format "-%d" toc-id-counter) ""))
              ;; (let ((top-level (plist-get info :html-toplevel-hlevel)))
              ;; (format "<h%d>%s</h%d>\n"
              ;;   top-level
              ;;   (org-html--translate "Table of Contents" info)
              ;;   top-level))
        toc
        (format "</%s>\n" outer-tag))))))))

(with-eval-after-load 'org
  (defalias 'org-html-toc #'my-org-html-toc))

This is what my visual book notes topic page looks like now:

I can improve on this by using the topic maps to determine next/previous links for the posts. Someday!

I often want to link to an Org heading from somewhere in my org-refile-targets, which includes my agenda files and other things. I don't want to think about where the heading is, I just want to link to it. I could use C-u C-c C-w (org-refile) to go to the heading, use C-c l (my shortcut for org-store-link), head back with org-mark-ring-goto, and then insert it with C-c C-l (org-insert-link).

Or I can use this code to make an Embark command that hooks into minibuffer prompts that include "goto" or "refile", so I can link to something with C-. i right from a refile or goto query.

(defun my-embark-org-insert-link-from-path (path)
  (interactive (list (car (org-refile-get-location))))
  (let* ((extra (if org-refile-use-outline-path "/" ""))
         (tbl (mapcar
               (lambda (x)
                 (if (and (not (member org-refile-use-outline-path
                                       '(file full-file-path title)))
                          (not (equal filename (file-truename (nth 1 x)))))
                     (cons (concat (car x) extra " ("
                                   (file-name-nondirectory (nth 1 x)) ")")
                           (cdr x))
                   (cons (concat (car x) extra) (cdr x))))
               org-refile-target-table))
         link)
    (insert (save-window-excursion
              (save-excursion
                (org-goto-marker-or-bmk
                 (elt
                  (org-refile--get-location path tbl)
                  3))
                (org-store-link nil))))))
(defvar-keymap my-org-path-map
  :doc "Shortcuts for working with Org paths from `org-refile'."
  "i" #'my-embark-org-insert-link-from-path)
(with-eval-after-load 'marginalia
  (add-to-list 'marginalia-prompt-categories '("Goto\\|Refile" . my-org-path)))
(with-eval-after-load 'embark
  (add-to-list 'embark-keymap-alist '(my-org-path . my-org-path-map)))

There are more Embark shortcuts in my Embark configuration.

I customized my visual book notes - all view to show the thumbnails of the images, and I added You can get to it by going to the visual-book-notes category from a post and then choosing "All". I like the new "View slideshow" and "Shuffle slideshow" buttons I added.

I also fixed some of the broken images in older posts, so there should be 43 posts with images now.

Someday I want to add a way to go from the sketch in the slideshow to the post, but it might require upgrading the version of Photoswipe I have. I'm currently on 4.x, which hasn't been updated in years.

Debian uses Git repository tags to notice when to update packages. I kept forgetting to tag subed's versions, so now I made a git post-commit hook which I think will do the trick. I based it on https://gist.github.com/ajmirsky/1245103, just updated for Python 3 and tweaked to work with how I do versions in subed.el. I've also added it to my README.org.

#!/usr/bin/python

# place in .git/hooks/post-commit
# Based on https://gist.github.com/ajmirsky/1245103

import subprocess
import re

print("checking for version change...",)

output = subprocess.check_output(['git', 'diff', 'HEAD^', 'HEAD', '-U0']).decode("utf-8")

version_info = None
for d in output.split("\n"):
    rg = re.compile(r'\+(?:;;\s+)?Version:\s+(?P<major>[0-9]+)\.(?P<minor>[0-9]+)\.(?P<rev>[0-9]+)')
    m = rg.search(d)
    if m:
        version_info = m.groupdict()
        break

if version_info:
    tag = "v%s.%s.%s" % (version_info['major'], version_info['minor'], version_info['rev'])
    existing = subprocess.check_output(['git', 'tag']).decode("utf-8").split("\n")
    if tag in existing:
        print("%s is already tagged, not updating" % tag)
    else:
        result = subprocess.run(['git', 'tag', '-f', tag])
        if result.returncode:
            raise Exception('tagging not successful: %s %s' % (result.stdout, result.returncode))
        print("tagged revision: %s" % tag)
else:
    print("none found.")