Discussed several times here: * https://news.ycombinator.com/item?id=23886501 https://news.ycombinator.com/item?id=23886501 * https://news.ycombinator.com/ite

Discussed several times here: * https://news.ycombinator.com/item?id=23886501 https://news.ycombinator.com/item?id=23886501 * https://news.ycombinator.com/item?id=11931747 https://news.ycombinator.com/item?id=11931747 Also articles on shipwrecks, e.g.: * https://news.ycombinator.com/item?id=15617028 https://news.ycombinator.com/item?id=15617028