To put it more geekly: it's like uncovering an old git commit from a dead branch. Is it useful? It's only useful to try understand where things came from. Is th

To put it more geekly: it's like uncovering an old git commit from a dead branch. Is it useful? It's only useful to try understand where things came from. Is that useful? In the grand scheme of things if we don't know where we're coming from we don't have any reliable way to asses where we're heading towards. In addition, the exercise sharpens our existing tools.