Regarding sample sizes. Say, you claim your product works, on the average, for 80 years before breaking. I believe you, buy it, and it promptly breaks within

Regarding sample sizes. Say, you claim your product works, on the average, for 80 years before breaking. I believe you, buy it, and it promptly breaks within 2 years of operation. Maybe I was unlucky. But high more likely, you were bullshitting me. That's what we have here. Human death rate: 1 death / 80 million miles Uber's death rate: 1 death after 2 million miles So yes, we can make judgement calls.