Oh god, if that was the case, I'd just wear it big!
This one told me something was wrong, because I was supposed to start & end the row on knit (or purl on the other side) and instead the way the numbers worked out, the rows that started in knit were ending in purl & vice versa. I'm glad I made a mistake by the right number of rows so I'd realize! I just couldn't figure out what was happening for a bit & then it hit me like a ton of bricks.