I just don't understand Ms -- on the one hand they've really improved the start screen's usability (new W8 build - X-64 build 9369 - I've posted a thread on this too in the Forum) but on the other hand they screw something up royally such as the new File explorer.
It's is an ABOMINATION to use with a mouse -- you'd be FOREVER scrolling / clicking. (Fortunately the Old file explorer aka windows explorer still exists).
Here's a screenshot of the new file explorer -- for a DESKTOP this must be the biggest piece of JUNK I've ever seen --and I've seen a lot of it.
Note also if your screen resolution is too low it won't even open -- example shown when I run it in a window in a VM -- on full screen it will work 2nd screen shot. However each blue box when you click on it opens again separately in a NEW full screen Window -- This is almost the Ultimate Horror of Horrors on a desktop.
For Touch on a tablet or smartphone -- possibly -- but a desktop with a MOUSE --forget it.
For a desktop the old method with an expanding TREE structure is fine. How for example does Ms expect you to Cut and Paste between different drives easily with this POS. You either need to be able to see the classic windows explorer tree structure or at least be able to see what's on the SOURCE and TARGET drives TOGETHER to move / copy stuff properly.