No one will notice.
No, I've never done it intentionally myself, but the 'Humility Block' is quite an interesting thing. There is a very good article here about it:
http://catsquiltart.com/2010/humilit...uth-or-fiction
And this:
"The first published reference found to the "humility block" custom is in Florence Peto's 1949 book American Quilts and Coverlets, in relation to one piece of chintz in one quilt:
'In certain localities superstitious quiltmakers tried this way to divert the "Evil Eye" which otherwise might be cast jealously on human endeavor; it was analogous to the Oriental idea that to make a perfect thing is to imitate the Deity, therefore unlucky and presumptuous. '"
By the way - the Amish would be appalled to make such a purposeful mistake and have people think their work shoddy.
Pretty interesting!