a lesson you can see being learnt and forgotten with massive parallelism, great tempo, and varying small and catastrophic effects throughout all history.
Any connection with your dad's piece about Trecwn? Well, there is a connection definitely - I was really wondering if that was your starting point.
no, I drew this something like a year ago, and just found it again today. I forget what caused me to draw it, but I think it was something like some agricultural disaster that happened a while back. But the general idea of failing or succeeding in buffering intermittently available resources is a very very general human problem!