Actual Error Covariance

Famous quotes containing the words actual and/or error:

“We can never safely exceed the actual facts in our narratives. Of pure invention, such as some suppose, there is no instance. To write a true work of fiction even is only to take leisure and liberty to describe some things more exactly as they are.”
—Henry David Thoreau (1817–1862)

“Never miss an opportunity to allow a child to do something she can and wants to on her own. Sometimes we’re in too much of a rush—and she might spill something, or do it wrong. But whenever possible she needs to learn, error by error, lesson by lesson, to do better. And the more she is able to learn by herself the more she gets the message that she’s a kid who can.”
—Polly Berrien Berends (20th century)