These days we read a lot. As the content consumption has gone up, our attention span seems to be going down. We might pay less attention to what we read, get less of it in and forget it quickly. In other words, in comes from one side, out goes the other side.
Naturally, this is a waste of our valuable time. If you are reading something, you might as well absorb everything it has. Perhaps you want to explain it to others later, so it pays to know the details but also be able to deliver it quickly depending on how much you have. This exercise helps delegates to increase their concentration while reading articles, reports or any written content.