rise in the east tomorrow; we merely have an extremely high confidence that it will, based on our having observed it having done so and the fact that it seems to conform to our tested theories about how heavenly bodies work. Scientific theories often hold up for many decades or centuries but are later discredited in the face of more complete knowledge. Thus, we must never close our minds in thinking we know something, but always be open to new information that alters what yesterday we deemed well-nigh certain.
Check out the other articles in Rick's series on philosophy and software testing:






