The 'path' Comes Into Existence

The Very Act Of Observing Disturbs The System.

It Seems Sensible To Discard All Hope Of Observing Hitherto Unobservable Quantities, Such As The Position And Period Of The Electron... Instead It Seems More Reasonable To Try To Establish A Theoretical Quantum Mechanics, Analogous To Classical Mechanics, But In Which Only Relations Between Observable Quantities Occur.

Quantum Theory Provides Us With A Striking Illustration Of The Fact That We Can Fully Understand A Connection Though We Can Only Speak Of It In Images And Parables.

You May Object That By Speaking Of Simplicity And Beauty I Am Introducing Aesthetic Criteria Of Truth, And I Frankly Admit That I Am Strongly Attracted By The Simplicity And Beauty Of Mathematical Schemes Which Nature Presents Us. You Must Have Felt This Too: The Almost Frightening Simplicity And Wholeness Of The Relationship, Which Nature Suddenly Spreads Out Before Us.

Every Experiment Destroys Some Of The Knowledge Of The System Which Was Obtained By Previous Experiments.