For those who are not familiar, Death Note is a manga/anime that involves a book called...well Death Note. A book with the power that magically kills people as long as you write the first and last name of the person AND know his/her face. It also allows you to write the cause of death which means you can also write HOW and WHEN that person dies (as long as it is realistically possible). However, if you just write the name of the person without any description of his/her death, he/she will die in 40 seconds due to a heart attack.
Now lets put this Death Note in real life. A person manages to obtain somehow, and now has the power to potentially change the world in the right hands, for better or worse. How would you feel if you have been hearing on the news that people have been mysteriously dying of heart attacks or worse. Constantly happening almost if not every day?
And to make this thread a bit more fun, what would YOU do with this kind of book? How would you "purify" the world of evil, or use it for your own gains? Would you even want that kind of power? And if so? How would you even go about it? How would you avoid getting caught and remain anonymous? (assuming there are people in the world who are as smart as the character in the show "L" that exist in real life.)