Could've been like a 16-17, idk. But whatever, it doesn't matter, it's the same thing.
That's what I'm saying dude. Let's say I get into UMKC's BS/MD program. At 17, how the hell can anyone be positive what they want to do with their life? They can't. So I'm going through this program or whatever, and then I think, "hey, I don't really like it here that much," thinking that it's Kansas City that's bothering me and not the idea of medical school. So I think to myself "aw, what the hell. I got Bs in most of my prereqs. Let's see how I do on the MCAT with little to no studying and I can apply out." Naturally, this hypothetical student doesn't need to read SDN, so they don't realize that most successful MCAT takers study for 100s of hours (or maybe they do, who knows). I take it, and I do badly, so I think "nbd, I'll just stay in this program (using UMKC as a dummy) to please mama and papa, and cause it'd be cool for people to call me Dr. Badatthemcat." I start medical school, realize it was really the idea of being a doctor I hated the whole time and not just the location or the acceleration or the MCAT, and so I drop out.
Do you see how this is plausible for half a dozen of the tens of thousands of applicants each year? This is just ONE scenario I came up with of the top of my head with no research- I'm sure there are others.