I think we have to accept that Call_of_the_Wild is never going to acknowledge that his magic question has been answered: the poor sap really seems to believe that it's unanswerable in terms of evolutionary theory, and the last thing he wants to do think his way out of that position.
This has been explained to you exhaustively several times in other threads, but you have so far shown not the first sign of understanding it. At risk of wasting precious time and forum space, I will have one more try.
- The very earliest sexually reproducing organisms showed no male/female differentiation - the cells that fused in fertilisation were morphologically and functionally identical (isogamy, still seen in many contemporary protoctists).
- Advantages accruing from division of labour led to differentiation between individuals producing small, motile gametes and those producing large, non-motile ones (first anisogamy, later heterogamy).
- There therefore never was a stage when one sex's system had evolved and the other hadn't, as you fantasise above.
I am still trying to figure out why you think this was a good answer. It just isn't a good answer. How did we get from reproducing without a body to reproduce in, to it being absolutely necessary for a human (or any living and breathing organism) to reproduce in a body?? But even if we put that aside, how do you go from this small scale reproduction (or whatever you want to call it, I dont believe it occurred anyway), to a male having a penis, testicles etc for reproduction, to a female having a vagina, ovaries, eggs, etc....At this large scale, if the males reproductive system was something that evolved over time, then the females system would have to evolve at the exact same rate, and there is just no way around it. There is no way for you to provide an answer as to how, even if every thing started on a small scale, for it to end up at a large scale without both the male and female systems changing at the exact same time and rate. No way. You are saying "it started like this...." But I am saying "It ended up like this...." so that "in-between time".....there was a change, how could this change have occurred if it didnt occur at the same time. Makes no sense. When you take away all of the fluff and feathers of the scientific wordplay that you people like to use, the question still remains.
To the rest of us CotW presents as a buffoon proudly parading his ignorance up and down the forum; in his own eyes I'm sure he's a plucky little David stinging the lumbering Goliath of orthodox biology with his shrewdly aimed missiles. No amount of argument or patiently explained biology is going to dent that self-image or that zealously guarded ignorance.
So compare my ignorance to yourself, someone that believes that nature, a blind, mindless, entity....an entity that cant think, see, or reason.....you believe that this entity gave every living and breathing thing, from a human to a cockroach, a reproductive system. You believe that it gave humans eyes to see, even though it didnt know we were gonna need eyes. Heck, it doesn't even know what eyes are, and yet, it gave us eyes. You believe that nature gave us ears to hear, even though it didn't know what it was doing. You believe that it gave us a tongue for taste. What a coincidence, our tongue is in our mouth....and food goes in our mouth....but food has taste, so nature gave us taste buds to taste food in our mouth. It could have put taste buds on our arms, or face, but food doesnt go there, so nature put the taste buds in our mouth, and it didnt even know it was doing it!!!!! Why put taste buds on our arms if what we taste goes in our mouths? That would be stupid. You believe that this mindless, blind entity gave us all of our internal organs, a heart to pump blood...because we need blood throughout our bodies, right? But how will the blood get to every part??? Hmmm....nature thought about it (which is funny, because it can't think)....and nature gave us a heart to do just that, to pump blood throughout our body, and it gave us veins for the blood to travel through??? It gave us a digestive system to take in and break down food.....even gave it a mechanism to remove waste from our body...
You believe that we have all of these things specified things, from an entity that doesn't have a mind, that cant see, that cant think, that cant reason...you believe this....but yet, im the ignorant one?? You believe that you can get that kind of order from something that doesn't have a mind, something that is blind, something that cant think??? But I am ignorant? Lol Yeah, ok