I wonder why Apple don't put all applications in an applications folder inside the Home-Folder. So they could offer a hole new mac for each user.
Every file is user specific, except for the applications. Is there a reason for this? Or just "too complicated" because every user want to have access to Safari and Third-Party Apps?
Is it just Apple or is it a UNIX design decision?
Is there an explanation/documentation/ operation system design?
Best Answer
Apple's design is not at all a traditional or typical UNIX layout for user files, user preferences or application files and preferences so I would say this is just Apple.
They do document exactly how developers are supposed to design OS X apps to take advantage of the "canonical" locations where files and preferences should be stored so that each user can decide to install any application in one or several locations.
Here are three articles I would start with to learn more: