Big Questions & Cool Tech

Think it, build it

Big ethical questions and the wildest new tech, made easy to think about.

A weird thought experiment about a runaway train has quietly become one of the most important questions in tech.

It's not magic, and it's not really thinking like you do. Here's what's actually happening inside.

Most people say lying is wrong — so why do so many of us do it anyway, even people we trust?

AI can sound convincingly sad, happy, or excited. But is anything actually happening inside — or is it just a very good performance?

A famous science fiction writer tried to answer this almost 100 years before it became a real question.

It's not about going up. It's about going sideways incredibly fast. Here's the part most explanations skip.

Every cell in your body has changed. Your personality has changed. So what actually makes you still... you?

Everyone says they want fairness. The tricky part is that people don't always agree on what fairness even means.