Apocryphal stories have it that the Amish purposely put a mistake in their quilts to show that only God is perfect. I've alway laughed at that idea--no need to put in a deliberate mistake; I make enough of them to prove He is the only perfect one around here. I, as most quilters and sewers do, try my best to make a lovely piece. However, I do have a private rule: If the fix doesn't work the third time after a serious bout with my best friend, the seam ripper, I leave the missed point, corner, crooked seam or whatever in the project and just get on with it. I agree with "better finished than perfect or another UFO wandering around."