A Mirror for Observers Author:Edgar Pangborn One of the major findings of modern physics is that the observer always affects the item being observed, and vice versa. This book is this axiom brought to life. — The Martians came to Earth 30,000 years ago, exiles from their dying planet. Seeing that human society of that time was not ready for contact with another race, they built their new ho... more »mes underground and undersea, to wait for that time when humanity will grow up.« less