Now it's good time to go and check out screenshots of Windows 1.0, 2.0, 3 and 3.1 to see how "ready" System 1.0 was compared to the Windows.
Other good thing to note is that the window manager of System was really good getting lots of windows to fit the puny 512x324 resolution. Something the Mac OS X is really bad at even with the 5k resolutions =(