Editing Design (section)

====Criticism of the rational model====
The rational model has been widely criticized on two primary grounds:

# Designers do not work this way&nbsp;– extensive empirical evidence has demonstrated that designers do not act as the rational model suggests.<ref name="Schön 1983"/><ref name="Ralph 2010"/><ref name=Cross/>
# Unrealistic assumptions&nbsp;– goals are often unknown when a design project begins, and the requirements and constraints continue to change.<ref name="Brooks"/><ref>{{cite journal |doi=10.1145/1005937.1005943 |url=http://www.deepdyve.com/lp/association-for-computing-machinery/life-cycle-concept-considered-harmful-WXRCv45NVM |author1=McCracken, D.D. |author2=Jackson, M.A. |title=Life cycle concept considered harmful |journal=ACM SIGSOFT Software Engineering Notes |volume=7 |issue=2 |year=1982 |pages=29–32 |s2cid=9323694 |access-date=2012-03-25 |archive-date=2012-08-12 |archive-url=https://web.archive.org/web/20120812035944/http://www.deepdyve.com/lp/association-for-computing-machinery/life-cycle-concept-considered-harmful-WXRCv45NVM |url-status=live|doi-access=free }}</ref>