[ Grouped ]

Most humans strive to organise, even just a little.  Even those who don’t feel particularly organised, still you seek to group things. 

We group the cutlery in the kitchen drawer, we group our clothes in the closet (don’t you?), and we group our documents and emails, in whatever way suits us at the moment (often ineffectively).

It’s an attempt to visually represent relationships.  The human brain looks for patterns and familiarity.  By grouping things together, we have a bit of a shortcut.  For more complex activities or artefacts, the grouping helps to inform structure and helps to navigate the subject.