The analogy I always use is of a computer program - a 700 megabyte program in a language not designed for readability would be bad enough, but there's also epigenetics to consider - every cell in a multicellular organism is essentially forming part of the compiler for the cells next to it, so the actual complexity is probably orders of magnitude larger.

And people want to give it a clean bill of health after three months of beta testing by mice? No games studio would ship something like this.