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🤯 Wacky fact of the day · Human Body

The brain uses about 20% of the body’s energy.

Although it is only around 2% of body weight, the brain consumes roughly a fifth of the body’s energy at rest.

Why? How? →Source ↗

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Atul Vij

Build Your Own LLM, Lesson 2: Write a BPE Tokenizer in Python

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20 Oct 2025 · Build Your Own LLM · 5 min read

Build Your Own LLM, Lesson 2: Write a BPE Tokenizer in Python

Build the byte-pair encoding tokenizer used by GPT-style models from scratch in about 40 lines of Python: training merges, encoding, decoding and why the…

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20 October 2025 by Atul Vij Build Your Own LLM

AI for Office Work Lesson 8: Safety, Privacy and Company Data

AI for Office Work Lesson 8: Safety, Privacy and Company Data featured illustration

15 Oct 2025 · AI & ML · 2 min read

AI for Office Work Lesson 8: Safety, Privacy and Company Data

Use AI without leaking data: what not to paste, approved vs consumer tools, anonymising, Indian data protection basics (DPDP Act), copyright, bias and a…

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15 October 2025 by Atul Vij AI & ML, AI Tools

AI for Office Work Lesson 7: Copilot in Microsoft 365

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14 Oct 2025 · AI & ML · 2 min read

AI for Office Work Lesson 7: Copilot in Microsoft 365

What Microsoft 365 Copilot does in Word, Excel, PowerPoint, Outlook and Teams, practical prompts for each app, how it uses your work data, and…

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14 October 2025 by Atul Vij AI & ML, AI Tools

AI vs Machine Learning vs Deep Learning vs LLM: The Difference in 5 Minutes

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13 Oct 2025 · Machine Learning · 2 min read

AI vs Machine Learning vs Deep Learning vs LLM: The Difference in 5 Minutes

AI, machine learning, deep learning and LLMs are nested ideas, not rivals. A short, jargon-free explanation with everyday examples of each.

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13 October 2025 by Atul Vij Machine Learning

AI for Office Work Lesson 6: Reports and Presentations

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13 Oct 2025 · AI Tools · 2 min read

AI for Office Work Lesson 6: Reports and Presentations

Use AI to structure reports, turn numbers into commentary, draft slide outlines, create speaker notes and design with Copilot in PowerPoint — while keeping…

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13 October 2025 by Atul Vij AI Tools

AI for Office Work Lesson 5: Cleaning and Classifying Data

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12 Oct 2025 · AI Tools · 1 min read

AI for Office Work Lesson 5: Cleaning and Classifying Data

Use AI to tidy data: categorise transactions, standardise names and addresses, extract fields from text, and when to ask for a formula or Power…

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12 October 2025 by Atul Vij AI Tools

AI for Office Work Lesson 4: Meeting Notes and Summaries

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11 Oct 2025 · AI Tools · 1 min read

AI for Office Work Lesson 4: Meeting Notes and Summaries

Turn meetings into useful notes: Teams/Zoom transcripts, prompts for decisions and action items, follow-up emails, and consent and confidentiality basics.

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11 October 2025 by Atul Vij AI Tools

AI for Office Work Lesson 3: Emails and Replies

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10 Oct 2025 · AI Tools · 2 min read

AI for Office Work Lesson 3: Emails and Replies

Draft and improve emails with AI: replies to long threads, tone adjustments, difficult messages, follow-ups and translations, while keeping your voice and facts correct.

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10 October 2025 by Atul Vij AI Tools

AI for Office Work Lesson 2: Excel Formulas With AI

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9 Oct 2025 · AI Tools · 2 min read

AI for Office Work Lesson 2: Excel Formulas With AI

Get correct Excel formulas from AI: describe your columns and sample rows, state your Excel version, ask for an explanation, test on known cases,…

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9 October 2025 by Atul Vij AI Tools

Who Invented Zero? India’s Gift to Mathematics

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8 Oct 2025 · History · 2 min read

Who Invented Zero? India’s Gift to Mathematics

Zero as a number — something you can add, subtract and multiply — was first written down in India. Brahmagupta's rules from 628 CE,…

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8 October 2025 by Atul Vij History

AI for Office Work Lesson 1: What AI Can and Can’t Do at Work

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8 Oct 2025 · AI Tools · 1 min read

AI for Office Work Lesson 1: What AI Can and Can’t Do at Work

A realistic map of AI at work: tasks it does well (drafting, summarising, formulas, cleaning), tasks to avoid, which tools to use, and how…

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8 October 2025 by Atul Vij AI Tools

Bank Statement Lesson 8: Project – Monthly Expense Dashboard

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7 Oct 2025 · Excel · 2 min read

Bank Statement Lesson 8: Project – Monthly Expense Dashboard

Final project: category totals, top category, most expensive month, food share and savings rate on a one-page expense dashboard with charts.

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7 October 2025 by Atul Vij Excel

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