All groups were provided with identical design constraints,
as follows:
• Tight budgets
• Limited living space
• The use of many digital products
In summary, groups A and C, who were provided with
Wikiuse cases, did not focus on the given design constraints as
much as the other two groups. Instead, groups A and C formulated
a new design problem, “non-intrusive use,” and were eager
to solve this problem. In contrast, groups B and D, who were
provided with related design cases, prioritized “tight budget,”
which was one of stated design constraints.