He lists all active mistakes, you list passive mistakes. I expect that passive mistakes are much more insidious, and they are the ones that really sap my productivity. They are also very ambiguous.

For example, I should probably be configuring that new web server instead of writing a comment on HN, but I like to take a little while to collect my thoughts and get back in the mood after lunch, which often involves HN. I'm not sure if it's a mistake or not.