It’s really difficult to multi-task. Not many people can do it. There is this simple task that come to know of to test if you can do so. Don’t believe me? Try it out yourself. Use one hand to draw a circle and the other hand to draw a square in the air. See if you can actually do it? Well most of us can’t do it. In fact for me I find that it takes time to switch from one task to another. It takes time to recall the things you did for something and how it works before you can actually resume with the task. So I find it much more time efficient to focus on one task do it before changing to another task and back again.