"Gleick in `` Chaos `` talks of a hypothetical about a scientist who is studying a micro-organism . The scientist describes what he sees under the microscope . Other scientists around the world , with the same organism , can make the same observations , and all concur that organism ' x ' behaves in a particular way . Such repeatable observations make their way into the textbooks . It becomes established as 'fact ' . Yet no one realises that when they are observing this organism , in fact , in order to observe it , they shine a light onto the subject . What if the organism reacts with light . How it 'behaves ' when it is observed is only how it behaves 'when ' it is observed ."
"Interesting . Give me an example ."
"How it 'behaves ' when it is observed is only how it behaves 'when ' it is observed ."
"Give me an example"