Step 5: Don't overcook your cookies
After 12 minutes the cookies will not look ready, but take them out anyway and put the whole pan out on the counter to cool. Do not touch them!
Oh, you'll want to touch them. You'll want to put one in your mouth right away, your tender tongue be damned, but don't do it. Really.
OK, so you did touch one and it seems fragile and undercooked. That's why you need to let them cool for 5 minutes before moving them to a rack or a plate.