Stuff We Do Wrong

So there is a bunch of stuff that we do incorrectly or inefficiently, either because we don't know any better or because we're too entrenched in the way we've always done it and don't want to learn or believe there is a better way.  I found a web article that lists a bunch of them. I would add using pennies to this list.  Just because we've always done it, doesn't mean there's not a better alternative out there.  My goal in life is to get rid of the penny...and also to help everyone peel a banana correctly. ;)