There’s obviously a hierarchy of information. It ranges from life-changing good to life-changing disastrous.

That got me thinking: What would be the most interesting and useful information anyone could get their hands on?

Years ago I asked that question to Yale economist Robert Shiller. “The exact role of luck in successful outcomes,” he answered.

I loved that answer, because nobody will ever have that information. But if you did, your entire worldview would change. Who you admire would change. The traits you think are needed for success would change. You would find millions of lucky egomaniacs and millions of unlucky geniuses. The fact that it’s impossible to possess this information doesn’t make it useless – just thinking about how powerful it would be to have it forces you to ponder a topic that’s important but easy to ignore.

Keeping the idea that the most interesting information doesn’t have to be realistic – it can be impossible-to-obtain, magical-wish thinking – here are three other things that would get your attention.