[TradicalRC]

"Common sense tells us that matter cannot organize itself,"

Until we look at some water turning to ice crystals... :-/

So freezing is matter organizing itself?

[js1138]

Crystal formation does not require freezing. Water is a rather unusual substance.

By the way, DNA has a crystalline form. Be careful when you assert that something having a complex appearance cannot form naturally.

[jennyp]

So freezing is matter organizing itself?

Sure. What is a crystal if not atoms arranged in a more orderly manner than when they're in a liquid state?

It's a simplistic example, to be sure. But organic molecules have an amazing propensity to spontaneously stick together in interesting ways.