Harding said, "It was bound to happen, Ian. You know you can't expect to observe the animals without changing anything. It's a scientific impossibility." "Of course it is," Malcolm said. "That's the greatest single scientific discovery of the twentieth century. You can't study anything without changing it."

Scientific objectivity was gone, even at the most fundamental levels. Physicists now knew you couldn't even measure a single subatomic particle without affecting it totally. If you stuck your Instruments in to measure a particle's position, you changed its velocity. If you measured its velocity, you changed its position. That basic truth became the Heisenberg uncertainty principle: that whatever you studied you also changed. In the end, it became clear that all scientists were participants in a participatory universe which did not allow anyone to be a mere observer.

>Heisenberg uncertainty principle, therefore you can't study dinosaurs without changing them.