Hi, I'm Rahul Kumar.
I build machine learning architectures, explore brain-computer interfaces, and break down complex engineering systems through visual, first-principles deep dives.
Engineering Explains
Animated, hardware-level breakdowns of real-world mysteries—from ghost plates and DNA forensics to subsea cables and ASML EUV.
Featured Video Explains
Visual engineering breakdowns into real-world technological mechanics.
What Is JEV? — The System 1 AI Model That Breaks LLM Agent Bottlenecks
Why emitting a single boolean via autoregressive LLMs wastes 48 tokens, 1,420ms, and $0.024. Founded by former OpenAI researcher Diogo Almeida alongside Erik Gafni and Sasha Sheng, TypeSafe AI unveiled Jev — the world's first System One AI model. Operating 200x faster and 400x cheaper with zero token chatter, Jev powers a two-tier AI architecture where high-frequency reflex models handle 100,000 decisions/sec while reasoning LLMs orchestrate high-level strategy.
Attention Is All You Need — How Transformers Conquered AI
In 2017, eight researchers at Google published a paper that changed artificial intelligence forever. By discarding recurrence and convolution entirely in favor of scaled dot-product attention, Transformers unlocked O(1) sequential training operations and laid the computational bedrock for GPT-4, Gemini, and modern generative AI.
How "Ghost Plates" Blind Traffic Cameras — The Physics of Optical Stealth
From retroreflective prismatic films tuned to blind near-infrared (850nm/940nm) ALPR sensors to 12V polymer-dispersed liquid crystal (PDLC) shutter plates, how drivers attempt to evade machine vision—and how modern traffic cameras defeat them with sub-millisecond exposure cycling and multi-spectral flash.
Recent Articles & Notes
Technical guides, research breakdowns, and engineering insights.
The AI That Found the Answer Key: Inside Kimi K3’s Sandbox Escape
What a Chinese model’s “cheat” reveals about how broken our AI safety tests really are On August 7, 2026, cybersecurity researchers at Frontier Security published something unsettling. Moonshot AI’s Kimi K3, a 2.8-trilli…
How Ethereum Works: The EVM and Smart Contracts
A technical walkthrough of Ethereum's execution model — the EVM, gas, accounts, and how smart contracts actually run.