A) Vision is a good example of effective complexity. It’s pretty easy to give a very simple explanation of it. Most of us have it, and have a pretty good idea of how to use it and how certain features of it work. But when you delve deeper into the subject, there is a lot of complexity in how our rods and cones work as well as how our mind processes our vision. Depth perception, object discernment, optical illusions all point to the complexities in how human vision works.
B) “The Problem of Uniqueness” interests me. I believe that uniqueness and reproducibility of an artwork should not matter at all. This article quotes Benjamin on claiming reproductions to have “diminished aura”, but doesn’t mention at all that Benjamin goes on to say that this diminishing of aura is good and necessary for art to oppose fascism and become enjoyable to more people rather than just the elite. My personal (and fairly unsophisticated) stance is that art is an experience meant for people, and to limit the capacity to bring emotion and excitement to a privileged few is only limiting what art can do.