The detection of small errors has always been the property of minds elevated little or not at all above the mediocre; notably elevated minds remain silent or say something only in criticism of the whole, while the great spirits refrain from censuring and only create.
Mark Twin, in 1893:
In the first place God made idiots. This was for practice. Then he made proof-readers.
On the other hand, Rabbi Akiba (Talmud: Pesahim, 112a) said:
When you teach your son, use a carefully edited text.