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๐Ÿค–Vibe Codingยท15 minยทSample Lesson

History of Vibe Coding

In February 2025, Andrej Karpathy -- a co-founder of OpenAI and former head of AI at Tesla -- posted a tweet describing a new way he'd been building software: talking to an AI in plain English, accepting its suggestions, and barely looking at the actual code. He called it 'vibe coding,' and the term spread across the programming world within days.

What You'll Learn

- Where the term 'vibe coding' came from and what it originally meant - How coding with AI has changed since the 1950s - The difference between traditional coding and vibe coding - Why vibe coding is controversial among professional programmers

From Punch Cards to Prompts

In the 1950s, programmers wrote code on punch cards -- stiff paper cards with holes in specific spots that a computer could read. A single mistake meant re-punching the whole card. By the 1980s, programmers typed text commands directly into a computer using languages like C. In the 2010s, tools called autocomplete started guessing the next few characters you might type. Then in 2021, GitHub released an AI tool called Copilot that could write whole lines of code based on what you were doing. Vibe coding, named in 2025, is the next big jump: instead of writing code yourself, you describe what you want in plain sentences, and an AI writes the entire program.

What Makes It 'Vibe' Coding

Karpathy described vibe coding as 'giving in to the vibes' -- you tell the AI things like 'make the button bigger' or 'add a login page,' and when something breaks, you just paste the error message back to the AI instead of debugging it line by line yourself. This is very different from traditional coding, where a programmer studies every line, understands exactly why it works, and can explain each decision. Vibe coding trades that deep understanding for speed: someone with no programming background can build a working app in an afternoon.

Why Some Programmers Push Back

Professional software engineers point out that vibe-coded apps can have security holes or bugs that nobody notices, because nobody carefully reviewed the code. In 2025, several vibe-coded apps were found leaking private user data because the AI had written insecure code that looked fine on the surface.

Vibe Coding Today

By late 2025, tools like Claude Code, Cursor, and Replit's Agent had made vibe coding common not just for hobby projects but for real startups. Many companies now blend both approaches: they vibe code a first draft quickly, then have an experienced engineer review and fix the AI's work before it goes live to real users. This blended approach is often called 'AI-assisted development' rather than pure vibe coding, because a human still checks the details.

Match each era to how people wrote code.

Terms

1950s
2010s
2021
2025

Definitions

Vibe coding: describe it, AI builds it
GitHub Copilot writes full lines
Autocomplete suggestions
Punch cards with holes

Drag terms onto their definitions, or click a term then click a definition to match.

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Who coined the term 'vibe coding' and when?

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What is the main risk professional engineers point to with vibe coding?

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Timeline Poster

Draw a timeline with four points: 1950s (punch cards), 2010s (autocomplete), 2021 (GitHub Copilot), 2025 (vibe coding). For each point, draw a simple picture and write one sentence describing how people coded then. Present your timeline to a partner and explain which era you think would have been hardest to code in, and why.

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