I thought they meant the fabric too. And thought they must be nuts. I'm ok with a 1/4" seam allowance but if you have to be that down to the last thread accurate I'll never make a decent quilt. The one I'm working on now is full of errors. I'm just hoping they all blend into one happy whole when it's done.
Never, ever pick a pattern with curves for your first quilt.
On the other hand once I get thru it curves won't be an issue again.
Rodney