<p>To all those who’ve taken the USABO:
So apparently, everyone just reads Campbell over and over. But does anyone know if it makes that much of a difference which edition?
e.g. the latest is the 8th–would it be okay if we studied out of the 7th? (It’s just a lot cheaper to buy.) Or all they all pretty much the same?
Thanks!!</p>
<p>They’re all the same. One has prettier pictures. The other has people with 70’s haircuts.</p>
<p>So what’s the oldest edition that’d be safe to use?
I mean, it’s not like the have breakthroughs in science every week.</p>
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<p>I’ve the 6th, it was 20 dollars when I bought it, I’m sure with the new edition out you could get it for a few dollars (Edit: Yeah, at amazon it’s like less than $5). Not that the lower editions are bad, but at that point, you can’t really save much more money.</p>
<p>I got the 4th for free and it’s the exact same thing as the 8th. (I compared).</p>