"Whenever anyone says, ‘theoretically,’ they really mean, ‘not really.’" ― Dave Parnas Topic(s): Science More From Dave Parnas "As a rule, software systems do not work well until they have been used, and have failed repeatedly, in real applications." More In Science "Science is built up of facts, as a house is with stones. But a collection of facts is no more a science than a heap of stones is a house."― Henri Poincare "Success and failure are both part of life. Both are not permanent."― Shahrukh Khan "The President’s call for more math and science students is not being heeded by his party’s leaders in Congress. They are cutting over $10 billion from student aide while refusing to fully fund No Child Left Behind. Something doesn’t add up."― Jim Clyburn