The act of design is a complex of actions and abilities that is
evolving and often highly individual. Given the context of
human–computer interaction, and a commitment to the model of design
space exploration, we identify two axes that help position efforts to
realize this model: the spectrum of strengths and needs that stretches
from the machine to the human, and the time scale of events in design.
Considering a section of each reveals a landscape that prefers certain
activities and gives rise to particular emphases. This paper places the
other authors in this Special Issue upon this map, and argues the value of
typed feature structures and information orderings to the endeavor of
realizing design space explorers.