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In 1976, Stephen Hawking tried to imagine what would happen if you threw a piece of information - a book, a computer, or even an elementary particle - into a black hole. Black holes, according to Hawking, are perfect traps, and for the outside world, this information will be irretrievably lost. This seemingly harmless conclusion was not as innocent as it might have seemed at first. It had the potential to undermine and turn the entire majestic edifice of modern physics upside down.

The most fundamental law of nature, the law of information conservation, was under threat. It was clear to those who followed the events: either Hawking was wrong, or the three-hundred-year-old fortress of physics would fall. The Black Hole War was more than just a debate between physicists. It was also a war of ideas, or perhaps a battle between fundamental principles.

Whose scientific views were correct and who won this war? This is what you will learn from the book by the outstanding American physicist Leonard Susskind.