I can't remember if it was a comment or a post that linked to a really interesting article? blog post? rant? on how difficult actually modelling neurons is. It

I can't remember if it was a comment or a post that linked to a really interesting article? blog post? rant? on how difficult actually modelling neurons is. It went into a lot about the genetics and epigenetics of the neuron, but I can't seem to recall the author or find the article. I wish I'd bookmarked it. :/