Hacker News new | ask | show | jobs
by TheOtherHobbes 4303 days ago
I agree with others. Your comment is nonsense. But the match question is more complicated than it looks.

Striking a match causes ignition because other humans have already made a long list of correlations and found them reliable enough to build a thing called a 'match'.

This is one of the differences between science and technology. Technology is practical causality. You know enough about phenomena to be reasonably confident that you can assemble them into configurations that do useful things in a reliable way.

Science is about not being sure if correlations exist until you check to find out. Science is also about building abstract models that can reliably predict unexpected correlations.

I'm not sure there's more to the idea of causation than reliable correlation backed up by elegant and efficient abstraction with predictive power. (There probably is, but it's not something I've looked into enough.)

Quantum theory has a habit of pushing this in unexpected directions. It seems to be about manipulating probabilities rather than objects. The idea that you can causally manipulate a probability distribution is a deeply weird one if you stop to wonder what exactly is being manipulated in physical terms, and how.