Hi Jason. Thanks for bringing this to your follower's attention - it's a massive irritation to mathematically enlightened people to realize just how prolific this phenomenon is of incorrect interpretation of pictures is, using statistically dubious rationale. Just another thought .... is that methods like R^2 or correlation only work if the observations fulfil the requisite statistical conditions - like independence etc. Time series do not. Log-returns typically will. That should be a first point of departure for any educational treaty on this issue. Forgetting that, and focussing on the multiplicity of patterns that are supported by a range of R^2 values is repeating the Platonic cave allegory, surely?