Day 2 of our collaboration on Llif-Flow for Pontio, in which Lisa Hudson, Jonathan Malarkey and I visit my barn in freezing conditions and try out out all sorts of marble runs – slate, branches, bed irons, scaffolding, pipes of many kinds, multi-choice ones, deterministic ones, long, low slope ones and steep energetic ones. We wanted to find out about the characteristics and behaviour of marble flows, and whether we could link them (literally or figuratively) to some of the flows from Jonathan's research. Answer: hmmm, sort of, maybe, yes.