stereotyping is bad for creativity. it brings in your related ideas, experience, and experience indirectly brings in your feelings about something.
problem solving is similar to bringing order to chaos. right you must have a desire for order but the ability to tolerate chaos is a must too.
real problem solvers respect and are more receptive to ideas, even if they are flawed. criticizing ideas is in fact a cheap way of demonstrating your mental superiority.
a new idea is normally a threat to the status quo; thus the fear of risk or failure is natural.
