&gt; Imagine if instead of having files&#x2F;folders to (teach,confuse) Grandma, we simply had a time-based system of references. If Time was a principle unit of information that a user was required to understand as an abstract concept, I feel that it would result in far better user interfaces.<p>How would it be easier when I, let alone my Grandma, can&#x27;t remember if I did something last week or the week before last? It seems it puts a higher cognitive load on the user.