I actually see irreducible complexity in computer science and programming. Often, you can just add one function, and it's fine. But sometimes, you need to add one function or many objects at the same time, then run it, or else it won't work.
Mutations work and change works to me by analogy when you can keep adding one part at a time. But if ever a system requires many parts to come to be, and it's impossible, it shifts through one part at a time, then it's impossible to get that type of system state.
I don't know how to map this into something tangible. In programming, usually, you can add just a function and test it. But sometimes, you need to add bunch of functions together or can't test any of them, because they rely on each other.
Let's say consciousness needs some sort of logic gate for analysis. Let's say for sake of argument, it requires memory + decision part + emotions + learning behaviour at the same time.
Let's say you can't get add these without the other. I'm not saying this is the case. I'm just saying suppose it was the case.
Would small steps leading to one help? Or would they all have to be a bunch steps leading to all of them being formed at the same time (which to seems irrational to assume as possible).
So far I'm not talking about anything tangible. I'm what if consciousness was this, and required parts that had those functions.
So we are just dealing with abstract.
It's not that too complex, it's that irreducible at the core. The consciousness could evolve for sure, and have many immense and different forms later, but on the onset as a system, as any version of the system, even the most basic elementary one, is it possible to get there by linear small changes over time.
I'm not talking about actual consciousness and it's nature, I'm saying for the sake of argument, you do need various components and those were among them.
Let's say this is a given fact. Is it irrational if we know that to be true to see design not from complexity, but from irreducible nature of components relying on each other at the same time.