Mark Sinnathamby

Engineering Lead | Programmer | Amateur astronomer | Vintage computers | Retro video games | STEM advocate

[Mark Sinnathamby @markfaction]

@virkvarjun Thanks for creating and sharing this 🙂

[Arjun Virk @virkvarjun]

I just spent months handwriting a 200 page guide on the entirety of ML foundations and math from scratch.

The guide features:
- Neural Nets (Backprop, Adam, SGD, Batch Norm)
- ML Algorithms (SVM, Grad Boosting, K-means, PCA)
- Hardware (Tensor Cores, Systolic Arrays, CUDA)
- Transformers (Multi-Head Attn, KV Cache, LoRA)
- Vision (ViT, Convolutions, MAE, IoU, NMS, VLM)
- Agents (OpenClaw, ReAct, Memory, Orchestration)

Everything I wish I had years ago, for free.

[Math Lady Hazel 🇦🇷 @mathladyhazel]

Today I learned that when Richard Feynman couldn't take any calculus courses in high school, he decided to teach himself calculus and made his own calculus book from his notes.

[Bite-Sized Nostalgia @landofthe80s]

On this date in 1984, Russian computer programmer Alexey Pajitnov created and released the very first version of Tetris.

BITE-SIZED FACT | The original, stripped-down edition was developed on a Soviet Elektronika 60 computer. Because of the computer's limited memory, the original build only had 10 levels & lacked the scoring and color we know today.

[Sci-Fi Archives @SciFiArchives]

The Matrix (1999) art by Krzysztof Domaradzki.

[Mark Sinnathamby @markfaction]

@RaminNasibov I like the default one 🙂 though I was using a fallout skin a few years ago.

[Aakash Gupta @aakashgupta]

Dirac couldn't get hired as an electrical engineer. A 19-year-old with a Bristol degree in 1921, during a post-war depression that had no use for him. So he stayed at Bristol and studied math for free because there was nothing else to do.

Two years later he got a fellowship to Cambridge. His advisor, Ralph Fowler, handed him proofs of an unpublished Heisenberg paper in August 1925. Dirac read it and realized the math resembled Poisson brackets from classical mechanics. Within months he had built an entirely new mathematical framework for quantum theory.

He published 11 papers before submitting his thesis. Eleven. Most PhD students struggle to publish one. Dirac had a body of work that constituted an entire theoretical foundation, and he still needed to package it into a dissertation to satisfy the degree requirements.

The thesis title tells you everything about the confidence level. When you title your PhD "Quantum Mechanics" at age 23, you are either delusional or correct. Dirac was correct. It was the first PhD thesis ever written on the subject.

Two years after that he wrote the Dirac equation, unifying special relativity with quantum mechanics and predicting antimatter before anyone had observed it. By 1932 he held the Lucasian Professorship of Mathematics at Cambridge. The same chair Isaac Newton held. He was 30.

Nobel Prize at 31. The youngest physics laureate at the time.

The entire arc from unemployable engineer to owning Newton's chair took 11 years. The field he named his thesis after is now the operating system of modern physics.

[Dave W Plummer @davepl1968]

Dude, I retired like ten years ago. Since then, I've written and published two books, a metric crapton of software, learned 3D graphics and embedded systems, built a YouTube channel with a million subscribers, restored two cars, sent three kids off to college, learned to drive a race car, and now I'm a public speaker for fun.

I don't have a garden. No chill needed.

[Brian Roemmele @BrianRoemmele]

Royal Space Force: The Wings of Honneamise, 1987

This hand drawn movie was directed by Hiroyuki Yamaga and produced by the studio Gainax.

A science fiction film set in an alternate world where a nation attempts to launch the first human into space.

The story follows Shirotsugh Lhadatt, an unmotivated pilot who ends up becoming the candidate for a historic mission, facing political pressure, personal doubts of his dream of reaching space.

[Sci-Fi Archives @SciFiArchives]

Moebius concept art for Alien, 1979.

[Apoorva Panidapu @apoorvapanidapu]

Earlier this month I volunteered at Stanford’s Future of Math symposium, and ever since, I've been puzzling through what it now means to pursue mathematics as a student in the age of AI. I wrote an essay to make sense of it all: https://t.co/cYyUDqSady

[yone @yone]

Sun SPARCstation Voyagerかっこいいよなあ！
こういうかっこいいコンピュータを使いこなすつもりで社会人になったはずだったんだが…
※写真は拾い

[Andy🕹❤️RetroGaming @LoveRetroBTW]

How many used Encarta back in the day?

[Dr Milan Milanović @milan_milanovic]

Visual Basic is 35 years old

Version 1.0 was a DOS version