I agree with English poet William Blake to an extent. While I believe without contraries is no progression, I do not think that contraries are necessary to human existence as he says it in 1793, but rather, contraries are necessary to human development and advancement. Contraries, or disagreement aid the pursuit of knowledge. Many people believe that there is only answer to every problem. Therefore, a clash of two contrasting ideas tends to lead to more doubt. Doubt leads to experimentation and that leads to discoveries and findings that support the arguments. During this process, the society progresses with the emerges of innovative ideas.