I am glad I am not alone as I have mis-read and cut our wrong size triangles (what can I do with those?), I have cut out too many squares - you name it and i have done it.Fortunately, I did not run out of material and that is a miracle in itself. I always buy an extra 1/4 yard or round off the yardage so I think that is what saves me when I goof up. I hesitate to cut up scraps into lengths or square as I always think that I may need that fabric for something that is not that size, so I have lots of odd sized remnants. Someday I will use them.......