Roam

2026-06-27
Original implementation credits go to Hugo Cisneros

Here lie bottom-up (not top-down) notes.

TutorsFirst

tutorsfirstTTTFFTFF

tutorsfirst is an Australian tutoring marketplace — find a trusted, verified tutor by subject, level and suburb. Browsing is free, tutors list free and keep 100% of their lesson fees, and students pay one small flat connection fee to swap contact details. No subscriptions, no commission.

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Fatfort

fat-fortTTTFFTFF

fat-fort is an early-stage effort in adversarial machine learning and computer-vision robustness — auditing where models break, and how to certify that they don’t. Built in the open, honest about the stage: no invented clients, no borrowed logos, no certifications that don’t exist yet.

The mark is a 2×2 grid whose corners read TT · TF · FT · FF. fat-fort is the FF corner (in red); its sibling tutorsfirst is the TF corner — two cells of the same matrix.

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Past Papers

Exam-paper library. Lives as a relative-symlink overlay over ~/Documents (originals untouched). Built/maintained by ~/dotfiles/lattice/.

Where

Collection
~/lattice/3-resources/past-papers/
Index (auto)
~/lattice/_meta/past-papers-index.org
Backed-up store for NEW papers
~/Documents/past-papers/

How to use

Add a paper
lattice add <file> (prompts subject/year/school/type, files + symlinks + reindexes)
Rebuild overlay
lattice apply
Regenerate index
lattice index
Check link health
lattice doctor

Convention

<subject>/<year-level>/<stream>/<year>-<school>-<type>[--solutions].pdf

3412 papers as of 2026-05-30.

Interleaving

“Conditions that create challenges for the learner and appear to slow the rate of learning often enhance long-term retention and transfer.” —Robert A. Bjork

Interleaving is the practice of mixing different topics, problem types, or skills within a single study session, rather than studying one thing to completion before moving to the next. Its opposite—studying in long, single-topic runs—is called blocked practice. Interleaving is the third of the three pillars of durable learning, alongside active recall and spaced repetition, and like its siblings it is counter-intuitive: it feels worse while you do it and works better when it counts.

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R Studio

UNSW Courses

here is an assortment of various courses from UNSW.

I only write brief notes on some courses here – very brief – only enumerations of Prescribed texts and maybe some term offering information.

There will not be any copyrighted material found here for you to pirate. Only a repackaging of some course-outline accessible information.

Math

MATH2801

Introduction to Mathematical Statistics

MATH2901

  • All of Statistics, by Wasserman
  • Mathematical Statistics & Data Analysis by Rice
  • A first look at rigorous probability theory, by Rosenthal

MATH3371 - Numerical Linear Algebra

  • Peter J. Olver and Chehrzad Shakiban, Applied Linear Algebra, Second Edition, Springer 2018.

(Digital copy P 512.5/244)

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Princube

this is a page for the Kick-starter princube.

Mine really did arrive in the mail, but I couldn’t really get it to work from memory (beyond the sample print)

LOC

A rough gauge of the novel, self-authored code I maintain. Counted with cloc (blank lines & comments excluded). Forks/clones are counted as my authored delta only (via git log --author); prose, data, generated output and vendored dependencies are excluded. Regenerated 2026-05-30.

Original projects

Projectlines
arcade18,279
typing-telemetry18,200
arcade-mobile17,172
chess-bot15,975
bots10,005
ledger-webapp-server-state6,506
chess-yolo6,004
macos-watchdog5,614
pegs5,219
receipt-ocr4,899
minesweeper2,411
hashi2,249
org-shop2,176
ande-running-script1,330
jobsync-chrome-extension1,274
full-stack-chatbot1,212
font2splines758
ledger-webapp554
tools334
mu-git146
subtotal120,317

Fork contributions (my delta only)

Projectlines
jobsync18,263
orgro5,681
org-pomodoro1,200
sioyek981
RATS_STATS556
subtotal26,681

Websites

Sitelines
abaj.ai (new-site)17,986
frizzande595
abaj8494-github-io320
io-site278
abaj849434
luke-site11
subtotal19,224

Infrastructure / automation

Componentlines
reMarkable (plugins + rmsync)21,687
Emacs config (elisp)8,180
beancount automation5,373
dotfiles (zsh/lua/shell/…)3,600
LaunchAgents + backup/cron glue670
notes / Hugo scripts210
subtotal39,720

Grand total

GRAND TOTAL~206,000

Notes

  • LaunchAgents + cron: 16 launchd plists (423) + restic / warm-snapshot / lattice scripts (~250). The per-pipeline scripts the agents/cron invoke are already counted under their own projects (beancount, new-site, reMarkable, notes).
  • reMarkable revised from the earlier ~28,400 estimate to 21,687 honest code-only (the old figure folded in Markdown design docs / vendored apps).
  • Forks with no novel contribution (excluded entirely): org_flutter, org_parser, packt-chatbot, listudy, gitsync, autofill-example.
  • mathematics is a writing repo (~36k lines of TeX/Org math notes, only ~1.9k actual code) — treated as prose, not counted. interviews mixes vendored/template material and couldn’t be cleanly attributed — excluded.
  • The ~/dotfiles/lattice/ migration toolchain (~690 LOC: build/dedup/refactor/shim) was authored during the 2026-05 lattice migration; excluded from the totals above.

Graph

Running Shoes

Brooks Adrenaline GTS 25