To a certain extent I think that it's fine to focus on a specific area where we know a lot about and want to generate the highest possible return out of it. The problem is that we are at risk to forget looking at the bigger picture. Especially when it comes to trading and investing, so much depends on the general market sentiment that even the best trader in one project will struggle to offset the losses in a bear market. That's why I would add the point of failing to focus on the bigger picture to your list, as an important point that we should invest time and research on.