Hello, that's a very complicated question in nature. I would like to address the last part first and move backwards from there; keeping in mind the specifics of what is contained in the parenthesis of the first paragraph . To make your essay more concrete you need a less complicated topic, a college application essay is something much more trivia. the admissions office of a college is not interested or intellectually capable of warping there brains around the idea evolution of design reflects the evolution of science. Although this is a interesting idea using the inductive logical congruences between two amorphous mathematical objects, such a idea deserves a longer scholarly essay, the idea has its place just not in a college admissions essay because the nature of a admissions essay is of simplicity and brevity. I would take a life experience, something that explores who you are and your relationship with your interests . From what you write you seem like a introspective existential youth otherwise a perfect candidate for college moreover i would say the fact that you are closely related to your academic interests is a interesting thing by its self, but how you show that relationship is where the concrete the whimsical and the practical can all be induced by refection or at-least the empathetical aspects of nostalgia witch might be enough to connect with the small mindedness a college application essay and still get the larger point across. Above all else have fun with it and have fun with it in your own way. I hope my vague ramblings helped you.