Percy's, by contrast, is a toy for us to show people (like creationists, students and beginners) how evolution works and what it really looks like.
And hence the evolutionists entire problem right there. They take a toy, beginners like approach to the complex problem of getting from one place to another. They figure, if you just forget about all of the details, all of the complications that must be overcome, all of the pitfalls that go along with this so called strategy, ..if they just close their eyes to everyone of the zillions of problems, they can just say-well, it takes time.
Its like child who thinks that if they just stack up enough stones they can reach the sun. They ignore that rocks don't balance very good if you stack them high enough, and that that many rocks get pretty heavy, and that you are going to have to figure out pretty quick how to get back down to pick up the next rock, and put it on top.
And then soon the atmosphere is going to change, and you are going to lose gravity, and the rocks are going to start melting...
But hey, I still believe if I stack up enough rocks, I can reach the sun. It just takes time.
And by the way, halfway through your exercise, you are going to change your mind, and want to go to Jupiter instead..after you decided to go to Saturn.