خلاصه داستان : از زمان اختراع لامپ، تاریکی طبیعی به طور فزاینده ای تحت تأثیر نور مصنوعی قرار می گیرد. یک بار ، نور بدون قید و شرط به عنوان یک عنصر کاملاً مثبت در نظر گرفته شد: هرچه نور بیشتر، بهتر.

Since the invention of the light bulb, natural darkness is increasingly invaded by artificial light. Once, light was considered unconditionally as an entirely positive element: the more light, the better. It increases safety and has a positive effect on our moods, but scientists are discovering that light also has a dark side as we are discovering its many unforeseen consequences.