I can say that I've tried, and have a real problem with similar exercises.. that said, I don't learn the same way a lot of other seem to. I am pretty good at getting a couple dozen things into my head at once, but my mind tends to wander beyond that point and I will lose focus.
In some ways this works to my advantage, in general an application or system I am working on can fit mostly in what I am actively thinking of at a given time.. the down side is I will then lose track of time, and side thoughts... it will be 7-8-9 at night, and I'll stop because I need to use the restroom, realize how late it is and that I'm hungry.
On the flip side, I rarely misplace things, I have a photographic memory, not eidetic... In general if I write something and see it at the same time, I'll remember.. if I only see it, it depends, and if I only hear it, I'll likely forget.
I do most of the things mentioned in the article regularly though... I've managed to cope pretty well with my advantages and disadvantages.
