Like we all know, one can edit a file or folder name in Windows Explorer by either right clicking and choosing "Rename" from the context menu OR by highlighting the file by left-clicking, and clicking once again to get into edit mode (although you have to wait a brief moment not to do a double-click).
This is a feature that confused me from the beginning of my Windows past and until recently, I have mostly been using the "Rename" option in the dialog box. Now I am using it more often, mostly because it needs fewer clicks and is easer to perform on a touchpad. But still, it doesn't feel intuitive to me, and I presume there are more that feel the same way.
Does anyone know where this pattern came from and what are its reasons in terms of usability?