An idea born from within a person's mind can be a great discovery. However, when the idea already exists in the world, not just the originator of ideas that can cultivate it. Other people who have different interests will adjust the idea or discovery in accordance with his wishes. There are good intentions, love, some are intent bad, even more.
Hence, many inventors of genius have actually changed the world with their invention, but also regret that the things they find have a negative impact on the world, society, and even for themselves.
