Scientists should be responsible for their discoveries. Through centuries scientists changed the world. All inventions starting from the first simple instruments to today’s findings, affect our everyday life in whole. But are those changes good? I can only say that exactly that made humanity as it is now. Inventions such as chemical weapons or bombs are dangerous and could be a cause of our extinction. But it depends of the people that’ll have a opportunity to use it. I state that scientist can’t be responsible for their inventions unless they use it themselves unclearly or the obvious usage is dangerous. With every new technology appear new ways of using the old ones. Now the wheel is inseparable from cars including tanks and rocket launchers. Should we blame physicists that gave the opportunity of weapons and nuclear bombs appearing? Or we should understand that these people mostly wanted to help us our to find out how our universe works? Isn’t it a problem of how our society uses it? In my opinion scientists should discover, they shouldn’t think about finding out how their invention could be used. Even if they would want to do it, one person is not able to calculate the influence. Also we should remember that different people invented many things independently at the same time. Some researches were made only under threat for protection. People claim that the nuclear bomb was the worst thing that could have happened with our world, but I think that it is a controversial question. From one hand it could eliminate us from the other it is a guaranty that no world war will start. Inventions are neutral, as a knife that could help in medicine or food or could kill. It’s a man making it, not the instrument. What I wanted to say is that many discoveries are irreversible, if someone wants to do something it would be done, no matter does one scientist want to do it or not. He can only warn. The last thing is that if scientist will be responsible for their discoveries there will be left only a few of them, because no one wants to be guilty only for asking an answer. A person can’t be responsible for the society reaction, or to be more truthful for someone’s greed and lust for power. He might try to stop the development but more often there will be other people who can make it. Summing up a scientist can’t be aware of everything, he can’t predict the future unless the obvious results, so except some moments it is more a responsibility of those people who conduct and invest in the discoveries.