Search posts

How Do You Know AI Is Actually Working?

Demos always look good. Production AI degrades silently. Here's the evaluation framework — from exact match to human review — and how to catch hallucinations.

Latency, Tokens, and Cost — The Physics of AI Products

Why is AI slow? Why does it cost money? What does streaming actually change? The mechanics of inference, visualized.

Do You Really Need GPT-4?

Frontier models are impressive — and often the wrong choice. Here's the model selection map: cost, capability, latency, and when local wins.

How AI Reasons (And Why It Sometimes Breaks)

o1, o3, DeepSeek-R1 — reasoning models behave differently. What chain-of-thought actually is, what 'thinking longer' means, and where it still fails.

What AI Cannot Do

8 structural limitations of every language model — not bugs, not temporary — built into how they work. Illustrated.

Fine-tuning vs. Prompting — When to Use Which

Prompt engineering gets you 80% of the way. Fine-tuning gets you the last 20%. Here's a clear decision framework for choosing between them.

Embeddings & Vector Databases — The Memory Layer of AI

How neural networks encode meaning as numbers, why similar things end up close in vector space, and what databases like Pinecone and pgvector actually do.

RAG Explained — How AI Knows What You Didn't Train It On

Retrieval-Augmented Generation lets LLMs answer questions about documents they've never seen. Here's how the pipeline works and when to use it.

Sweden Migration Globe — 3D Arc Flows 2010–2023

A 3D interactive globe mapping every major immigration and emigration route to and from Sweden from 2010 to 2023. Watch India's rise, Syria's refugee spike, and the COVID collapse — all in animated arcs.

5 Mental Models You Need Before Diving Into AI

Before you learn how AI works, learn how to think about it. These five mental models will save you hours of confusion.

Prompt Engineering — How to Talk to AI

Five techniques that cover 95% of real-world prompt engineering. Zero-shot, few-shot, role prompting, chain-of-thought, and structured output — with before/after examples.

How DNS Works — The Internet's Phone Book

You type google.com. Your browser stares at it blankly — it has no idea where that is. Here's how the internet turns a name into an address, and why it's faster than you'd expect.

Why AI Lies (And Doesn't Know It)

AI sometimes states false things with complete confidence — fake citations, wrong numbers, invented APIs. This is hallucination. Here's why it happens and how to catch it.

How HTTP Works — The Language of the Web

The TLS tunnel is open. Now your browser and server need to speak the same language. Here's what GET, POST, 404, and 200 actually mean — and what really travels across the wire.

How HTTP/2 Works — The Speed Upgrade

HTTP/1.1 can only send one request at a time. A modern page needs 50+ files. HTTP/2 loads everything at once over a single connection — here's how multiplexing actually works.

What Happens When You Hit Enter?

You type a URL and press Enter. 200 milliseconds later, a page appears. Here's every single step that happened in between — from DNS lookup to browser paint.

How SFTP Works — Secure File Transfers

Every time a developer deploys files to a server or downloads logs, SFTP is often involved. Here's how it differs from FTP, how the SSH tunnel works, and when to use it.

How TCP Works — The Internet's Delivery Guarantee

You have an IP address. Before a single byte of data flows, TCP performs a secret handshake and establishes a guarantee: nothing will be lost. Here's how it works.

How HTTPS Works — The Lock Icon Explained

Your TCP connection is open. But right now, it's a naked wire — every router between you and the server can read everything. Here's what TLS does, how the handshake works, and what that padlock actually means.

How WebSockets Work — Real-Time, Both Ways

HTTP is always ask-then-answer. WebSockets open a permanent channel where server and client talk freely — no polling, no waiting. Here's how chat apps, live feeds, and multiplayer games actually work.

Why AI Forgets

Mid-conversation, AI suddenly doesn't remember what you said earlier. This isn't a bug — it's the context window. Here's how it works and how to work around it.

How AI Reads Your Words

AI doesn't read letters or words — it reads tokens. This small detail explains why AI costs money, why it stumbles on names, and why non-English is more expensive.

What Happens When You Ask AI Something?

You type a message. Half a second later, AI replies. Here's every single step that happens in between — from your first letter to the model's last word.

Transformers — The Architecture That Changed Everything

Every major AI — GPT, Claude, Gemini, Llama — runs on the Transformer. Here's how it works, stage by stage, with live visualizations.

How AI Learns, Thinks, and Decides

Training, inference, sampling, fine-tuning — these words are everywhere. Here's what they actually mean, with live visualizations and honest analogies.

SAP ERP Module Universe — Interactive Map

A visual guide to SAP's core ERP modules — Finance, Logistics, Manufacturing, HR, Analytics, and how they all connect through one database.

২০টি সুইডিশ সামাজিক নিয়ম যা প্রত্যেক ভারতীয়ের জানা উচিত

সুইডেনে যাচ্ছেন? এখানে সবকিছু যা কেউ আপনাকে বলে না — কিউ কালচার থেকে ফিকা, ইয়ান্তেলাগেন থেকে সিস্টেমবোলাগেট। একটি ইন্টারঅ্যাকটিভ সারভাইভাল গাইড।

२० स्वीडिश सामाजिक नियम जो हर भारतीय को जानने चाहिए

स्वीडन जा रहे हैं? यहाँ वह सब कुछ है जो कोई आपको नहीं बताता — क्यू कल्चर से लेकर फीका, यांटेलोवेन से सिस्टमबोलागेट तक। एक इंटरैक्टिव सर्वाइवल गाइड।

20 Svenska Sociala Regler Varje Indier Bör Känna Till

Ska du flytta till Sverige? Här är allt ingen berättar för dig — från kökultur till fika, Jantelagen till Systembolaget. En interaktiv överlevnadsguide.

20 Swedish Social Rules Every Indian Should Know

Moving to Sweden? Here's everything nobody tells you — from queue culture to fika, Janteloven to Systembolaget. An interactive survival guide.