I can pretty confidently say that we will never fully understand human cell biology/biochemistry. The interplay between proteins, genes, metabolites, etc is min

I can pretty confidently say that we will never fully understand human cell biology/biochemistry. The interplay between proteins, genes, metabolites, etc is mindbogglingly complex. I say this as someone who works as a chemical biologist and uses CRISPR/Cas9 in my work to perform gene editing in cancer cells. We are still quite a ways away from performing real editing in humans, and even then it's gonna be a crapshoot. Most traits are polygenic, and we don't understand how tweaking one gene will effect distal biology.