Now he is old and tired and wants Imlac to relieve him of the onerous burden of maintaining the weather exactly as it would be without his efforts. The wise and charitable response to Al Gore, then, is pity. Therefore, the future behavior of all physical systems cannot be predicted beyond narrow limits. In the case at hand, the future weather and climate cannot be predicted beyond narrow limits. The unpredictability of physical systems is not simply a result of the limitations of human knowledge.
Physical systems are inherently unpredictable.
No amount of research or computer power can overcome this unpredictability. Even if we knew everything there is to know about the present state of the universe and had an infinite computing capacity, we would still be unable to predict future weather and climate beyond narrow limits. The unpredictability is part of the universe itself. Many variables affect weather and climate. As a result, weather and climate are always changing.