I have a little story about this subject. A few years ago I was with a group of quilters and garment makers who had been invited to visit a thread manufacturer in Germany. Various heads of departments gave their speech about the manufacturing process. I was itchy to ask the question about which end to thread the needle. So I finally got to ask. His answer was " makes no difference". One in our party was a very high profile quilter, teacher, Internet star etc. when we herd his answer she blurted out. " you just took a lot of my expertise away from me"