You guys do realize I am not the OP and did not do this, right?
If I was MedPR, I would write "Good job with reading comprehension here. You're far wiser than me and it's obvious you're going places." But (thankfully) I'm not.
And also, that wasn't justifying anything. Never in this thread did I ever justify the mistake. That was a simple statement regarding the use and re-use of secondary essays. How you connected that to justifying the OP's error, I'll never know.
I like how people act as if I know nothing about how adcoms view things (which I don't) but they somehow know all the inner workings (which they don't). I'm sure it definitely hurts to have made this mistake but I simply cannot see any adcom dismissing YEARS of hard work on the basis of one simple error.
This isn't like he got caught drunk driving or cheating on an exam. You're talking about three letters here.. People make mistakes and in the relative grand scheme of things, this ranks pretty low.
Will it hurt your chances? Yep, probably a ton. Will it get you an auto-rejection? I don't think so. It certainly doesn't increase the already bad odds one has in applying. If a school otherwise thinks you are a great fit for their class, I don't think three letters is going to change that much. You're definitely going to have a harder time convincing them of that fact though.