When you look at how molecules like RNA work, and krebs cycle, and the billions of cells we are composed of, and so on, it always strikes me as astronomically lucky that we function at all. Like how can this assemblage of Rube Goldberg machines function for more than 1 seconds without catastrophically falling apart?

I think multicellular creatures on earth are just so complex they are basically ineffable.. We can understand certain general principles and statistical trends, but the entire system holistically is incomprehensible for a human level intelligence.

Kind of analogous to ML, we absolutely understand how each neuron works, we built them! But we often dont really understand how the resulting model works.