Our brains all think in different ways. Some of us are visual learners, some kinesthetic, and others auditory. Some of us are lateral thinkers, others linear thinkers. What's my point? Humanity is diverse, and discrimination in work methods is 19th century. I need the notebook hierarchy! To me, everything is centered around notebooks, and I have 187 of them, most of them in stacks of some sort. Scrolling through my list of notebooks is tedious (yes, I can search, but sometimes scrolling is more straightforward). And what is going to happen to me when I reach that limit of 250 notebooks? Please, Evernote, bring in stacked notebooks for those of us that need to work this way.