Yarrow(@Yarrow_ai):In 1980, AT&T asked McKinsey to forecast the US mobile phone market by 2000. 📱 📊 McKinsey's answer: 900,000 users. ❌ 📊 The actual number: 109,000,000. ✅ Off by more than 100x. AT&T walked away from mobile. Then spent $12.6 billion buying back in. The forecast was never graded. The decision was never reversed in time. And the cost was measured in decades, not dollars. This is what happens when no one keeps score. ☘️

Yarrow

@Yarrow_ai

The policy simulation engine, Forecasts that get graded. Powered by @Agentese_ai

加入 April 2025

46 正在關注 513 粉絲

Yarrow@Yarrow_ai

2026.08.13 04:52

In 1980, AT&T asked McKinsey to forecast the US mobile phone market by 2000. 📱 📊 McKinsey's answer: 900,000 users. ❌ 📊 The actual number: 109,000,000. ✅ Off by more than 100x. AT&T walked away from mobile. Then spent $12.6 billion buying back in. The forecast was never graded. The decision was never reversed in time. And the cost was measured in decades, not dollars. This is what happens when no one keeps score. ☘️