Okay thanks for the reply. Yeah, I know I posted a somewhat similar thread, but it had a different focus (the focus there was on getting in, not about what I should write in my SOP).
Well, my real question for my SOP wasn't necessarily about my ADD (that can be explained in a very small amount of space), but more about my entire situation that needs explaining. Actually I might have to explain another thing too: my transcript looks extremely unfocused since I took classes from all sorts of different departments, and I'm pretty much graduating with the bare minimum of courses needed for my degree). However, I do lots of self-study, and I'll get a lot of skills from those different fields that will be useful for any field of science. In other words, I'm quite generalist. And I might have to explain some of my huge gaps (e.g. I quit astronomy/physics for 3 years and then I came back). So then this means more explaining to do. =/ I do have a passion for science in general, and maybe they'll accept that as inclusive of a passion of astrophysics (which is sort of less believable due to my gap).
Then the fact that I became a math major (even though I often find it frustrating without physical application). I recognize the intrinsic significance of math, but since I'm a better intuitive thinker than an analytical thinker, I'd much rather learn the physics first and the math second, rather than the other way around.
Good points about the relative importance of the SOP though. Although I need every advantage I can get, and this means that I have to be exceptional on everything that isn't GPA.
Let’s put it this way: an incredibly good essay could help you, but a bad essay won’t do too much harm (unless it’s really bad). To a good approximation, all these essays sound alike after a while; it’s quite difficult to be original and inspiring in that format
Hmm interesting. The thing with me is that there aren't a lot of undergrads with ADD who entered 2 years early and who have huge numbers of high-level/grad-lvl courses in all sorts of scientific fields. My essay, for sure, won't sound like anyone else's, although maybe not necessarily in the positive way. Maybe with some creativity I could write something convincing.