I mean saying ALL estimations are wrong is exaggeration. As they say, "Even a broken clock is right twice a day" This has been my experience. I don't disagree

I mean saying ALL estimations are wrong is exaggeration. As they say, "Even a broken clock is right twice a day" This has been my experience. I don't disagree with the content of the article, really just the exaggerated title. Every now and again we do get a 100% correct estimation. It doesn't happen often. In fact it's quite rare. But its more than never.