these limited changes meant that the original macintosh system remained largely as it was when initially introduced. that is, the machine was geared towards a single user and task running on a floppy disk based machine of extremely limited ram. however, many of the assumptions of this model were no longer appropriate. most notable among these was the single-tasking model, the replacement of which had first been examined in 1986's "switcher" and then replaced outright with multifinder in system 5. running multifinder normally required a larger amount of ram and a hard drive, but these became more common by the late 1980s.