Mackerel Sky II [Sky Watch Friday]

I've had this shot for several months and decided it's time to post a photo worthy of being considered a sky image -- ahem--  We don't often get a 'mackerel' sky, but occasionally we see a good one like this. It looks like a dispersant was poured into a large cloud to generate all these neat little smaller clouds. It reminds me of a cartoon I once saw in Punch [an English humor magazine]  in the 1960s when I was a graduate student in Microbiology. I copied it and have kept it all these years, since I always found it amusing. Actually, I regard it as sort of a metaphor for doing science; i.e., you set out to answer some question and, in the process of [perhaps] achieving that, new questions arise. As such, knowledge in the the field grows. OK -- enough pedantry; here's the cartoon. Hopefully, I am not violating some copyright --