If I asked you a question "What is your favourite memory of being around 6 years old?", when you answer the first thing you are going to do is start moving your eyes around to draw on memories. You will most probably move your eyes up to the left first, [depending on your dominant writing hand] but as you are answering, they will move both ways as you recall old photographs, songs, ice creams , videos, anything at all from that period of your childhood, and as your brain, via the searching of your eyes puts that period of your life together, you will be able to answer the question. If I asked you another question, "Tell me about your first day in primary school", but this time I told you that you had to look straight at me and not move your eyes around, you would find this quite difficult. The only time that it wouldn't be difficult is if I gave you the question 3 days before I wanted the answer and you had time to do the thinking and then gave me a "practised and rehearsed answer". If you are reading what I have written hear and you are thinking about what I'm saying, note how your eyes are moving around now!!!!!!!