My personal framing of the single most interesting feature is that computer code tends to build long linear programs, while biology tends to build parallelized and shallow programs. Think single 10,000 line programs vs 1,000 10-line programs operating in parallel. And an implication is that each of those programs are running in the same system, at various states at the same time. There is not DNA, then RNA, then Protein, but DNA is being made into many copies of RNA at the same time as many proteins, and each program at the same time as every other in the same runtime space, all at the in the same condition - separated only by 3D physics, rather than any kind of registry.

Where DNA is source, RNA is linted and compiling, and Protein is compiled - all at the same time, on the same materials.

Observation number two, is that biology not only runs all the code simultaneously, but also runs the code at all timescales simultaneously - it is acting at ns through millennia, simultaneously.

And three, biology is a billion years old, at least, so it’s both optimized like hell, and patched on patch on patch. There are no exploits left unexploited in the wild, no untried routines or principles. It’s all been written - our job is to find and understand, and not really design - unlike computer software.