In between rules in formal systems there's lots of space. all models are wrong, some are useful. I just really like thinking about how much is there that we don't even know about - and the more structured a system for understanding something is, the more fragile it becomes.

ok but what does "goo between the prickles" refer to?

“See, there are basically two kinds of Philosophy - one's called prickly, the other one is called goo. Prickly people are precise, rigorous, logical - they like everything chopped up and clear. Goo people like it vague, big picture, random, imprecise, incomplete and irrational. Prickly people believe in particles, goo people believe in waves. They always argue with each other but what they don't realize is neither one of them can take their position without their opposition being there. You wouldn't know you are advocating prickles unless someone else was advocating goo. You wouldn't even know what prickles was and what goo was. Life is not prickles or goo, its gooey-prickles or prickly-goo.” ― Alan Watts