They are mostly a myth, though not always. This comment from 7 days ago covers it adequately: https://news.ycombinator.com/item?id=34562122 https://news.ycomb

They are mostly a myth, though not always. This comment from 7 days ago covers it adequately: https://news.ycombinator.com/item?id=34562122 https://news.ycombinator.com/item?id=34562122