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🤯 Wacky fact of the day · Human Body

Bones are stronger than steel of the same weight.

Weight for weight, bone is remarkably strong, especially under compression, because of its mix of collagen and mineral.

Why? How? →Source ↗

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AI & ML

Artificial intelligence explained by building it: machine learning, neural networks, LLMs, RAG and agents — plus how to build your own language model.

Guardrails, Cost Limits and Logging for AI Agents

Guardrails, Cost Limits and Logging for AI Agents featured illustration

8 Aug 2026 · AI Agents & RAG · 2 min read

Guardrails, Cost Limits and Logging for AI Agents

Make an agent safe to share: turn limits, a cost ceiling, read-only tools, approval for risky actions, prompt-injection awareness and a log you can…

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8 August 2026 by Atul Vij AI Agents & RAG

An AI Agent That Searches Your Documents

An AI Agent That Searches Your Documents featured illustration

7 Aug 2026 · AI Agents & RAG · 2 min read

An AI Agent That Searches Your Documents

Turn RAG into a tool: the agent decides when to search, can search more than once with better wording, and combines document answers with…

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7 August 2026 by Atul Vij AI Agents & RAG

Better Retrieval: Chunk Size, Scores and a “Don’t Know” Threshold

Better Retrieval: Chunk Size, Scores and a “Don’t Know” Threshold featured illustration

6 Aug 2026 · AI Agents & RAG · 2 min read

Better Retrieval: Chunk Size, Scores and a “Don’t Know” Threshold

Measure retrieval instead of guessing: build a small test set, compare chunk sizes, and add a score threshold so the assistant refuses when your…

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6 August 2026 by Atul Vij AI Agents & RAG

RAG: Make AI Answer From Your Own Documents

RAG: Make AI Answer From Your Own Documents featured illustration

5 Aug 2026 · AI Agents & RAG · 2 min read

RAG: Make AI Answer From Your Own Documents

Retrieval-augmented generation in plain Python: split documents into chunks, score them against a question, and send only the best chunks to the model with…

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5 August 2026 by Atul Vij AI Agents & RAG

Your First Tool-Using AI Agent in Python

Your First Tool-Using AI Agent in Python featured illustration

4 Aug 2026 · AI Agents & RAG · 3 min read

Your First Tool-Using AI Agent in Python

Build a working agent loop with the Claude API: define tools as JSON schemas, run the model, execute tool calls and send results back…

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4 August 2026 by Atul Vij AI Agents & RAG

What an AI Agent Really Is (and When You Don’t Need One)

What an AI Agent Really Is (and When You Don’t Need One) featured illustration

3 Aug 2026 · AI Agents & RAG · 2 min read

What an AI Agent Really Is (and When You Don’t Need One)

An AI agent is a model in a loop with tools. Learn the loop, the difference between a chatbot, a workflow and an agent,…

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3 August 2026 by Atul Vij AI Agents & RAG

OpenClaw Alternatives Compared: OpenHuman, ZeroClaw, PicoClaw, NanoClaw, IronClaw and More

OpenClaw Alternatives Compared: OpenHuman, ZeroClaw, PicoClaw, NanoClaw, IronClaw and More featured illustration

27 Jul 2026 · AI Agents & RAG · 3 min read

OpenClaw Alternatives Compared: OpenHuman, ZeroClaw, PicoClaw, NanoClaw, IronClaw and More

The OpenClaw ecosystem explained: lightweight rewrites in Rust, Go, Zig and C, security-focused agents with sandboxing, OpenHuman’s Rust agent harness, and cloud options like…

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27 July 2026 by Atul Vij AI Agents & RAG Leave a comment

Open-Source AI Agents: OpenClaw, OpenHands, Aider, n8n and More — What They Do and How to Install

Open-Source AI Agents: OpenClaw, OpenHands, Aider, n8n and More — What They Do and How to Install featured illustration

7 Jul 2026 · AI Agents & RAG · 3 min read

Open-Source AI Agents: OpenClaw, OpenHands, Aider, n8n and More — What They Do and How to Install

A guide to popular open-source AI agent software — OpenClaw personal assistant, OpenHands coding agent, Aider, Open Interpreter, n8n and CrewAI — with install…

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7 July 2026 by Atul Vij AI Agents & RAG Leave a comment

Meta Llama Models Explained: Llama 1, 2, 3 and 4 — What Changed Each Time

Meta Llama Models Explained: Llama 1, 2, 3 and 4 — What Changed Each Time featured illustration

4 Jul 2026 · LLMs · 3 min read

Meta Llama Models Explained: Llama 1, 2, 3 and 4 — What Changed Each Time

A clear history of Meta’s open-weight Llama models: Llama 1 (2023) to Llama 4 Scout and Maverick (2025), with sizes, context length, licences, what…

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4 July 2026 by Atul Vij LLMs Leave a comment

How a Neural Network Learns, Explained With a Spreadsheet

How a Neural Network Learns, Explained With a Spreadsheet featured illustration

29 Jun 2026 · Deep Learning · 3 min read

How a Neural Network Learns, Explained With a Spreadsheet

Build a single neuron in Excel: weights, bias, activation, error and gradient descent — step by step with formulas, so the idea behind deep…

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29 June 2026 by Atul Vij Deep Learning Leave a comment

AI Models Compared: GPT, Claude, Gemini, Llama, DeepSeek, Qwen, Mistral and More

AI Models Compared: GPT, Claude, Gemini, Llama, DeepSeek, Qwen, Mistral and More featured illustration

16 Jun 2026 · LLMs · 3 min read

AI Models Compared: GPT, Claude, Gemini, Llama, DeepSeek, Qwen, Mistral and More

A practical guide to today’s popular AI model families — OpenAI GPT, Anthropic Claude, Google Gemini, Meta Llama, DeepSeek, Qwen, Mistral, Gemma, Kimi and…

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16 June 2026 by Atul Vij LLMs Leave a comment

From GPT-1 to GPT-5: The Complete History of OpenAI’s GPT and ChatGPT

From GPT-1 to GPT-5: The Complete History of OpenAI’s GPT and ChatGPT featured illustration

26 May 2026 · LLMs · 2 min read

From GPT-1 to GPT-5: The Complete History of OpenAI’s GPT and ChatGPT

How OpenAI’s GPT models evolved — GPT-1, GPT-2, GPT-3, ChatGPT, GPT-4, GPT-4o, the o-series reasoning models, open-weight gpt-oss and GPT-5 — with what each…

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26 May 2026 by Atul Vij LLMs Leave a comment

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