Saw lot's of stuff in this thread:
Got me to ask, What's your gait?
The most common is where the middle of the sole, under the ball of your foot softens first.
I've also seen toes wear first. Lateral, either inside or outside borders, across the ball can wear quickly as well. In those cases, stitches will appear to be worn. As alluded to, they are lock stitches, meaning, they are independent of each other. They won't...