12tldr is a free AI article summarizer. Paste any article URL and get a structured summary with TL;DR bullet points, context, key details, and why it matters — all in seconds.

How does 12tldr work?

Paste an article URL into the input field and click Summarize. Our AI reads the article and generates a clear, structured summary. No signup or account is required.

Is 12tldr free to use?

Yes, 12tldr is completely free. No account, no subscription, no tracking required.

Which websites does 12tldr support?

12tldr works with articles from most major publications including The Economist, New York Times, Bloomberg, BBC, Reuters, The Guardian, Wired, and thousands of other websites.

What does the AI summary include?

Each summary includes a TL;DR with three bullet points, a 'What it's about' section, 'The details' with key facts, and 'Why it matters' — giving you a complete picture without reading the full article.

Lab Tests Show Imitation Fuels Market Herding

Source: sciencedirect.com

Researchers tested if people copy others' irrational choices in economic games to explain real-world bubbles.
In lab experiments with 96 participants, subjects matched irrational bids from others 70% of the time, even when knowing better options.
This herding behavior shows how social imitation can drive market bubbles without needing complex reasons.

Economists ran controlled lab experiments to see if people blindly copy bad financial decisions made by others, mimicking how stock market bubbles form. They used a simple game where players bid on an asset with known value, sometimes seeing others' irrational high bids. The key finding is that strong social influence makes people follow the crowd, even against their own judgment, which helps explain why bubbles persist in real markets. This matters because it reveals a basic human tendency that