I am not known for my powers of observation

Yesterday morning, I notice an error made the previous evening (and I wasn't even drunk while knitting. For real): So, I drop the stitches, and work it all back up (any changes in stitch definition are fixed while blocking, I promise):
Later, I take my knitting outside, because it is a beautiful day, and I notice another mistake, near the border, six inches below.

Frog! Dropping stitches near the border is too fiddly. Even for me.
It's OK. If I rip, I just get to knit more.