Interactive technology assessment (iTA) provides an answer to the ethical p
roblem of normative bias in evaluation research. This normative bias develo
ps when relevant perspectives on the evaluand (the thing bring evaluated) a
re neglected. In iTA this bias is overcome by incorporating different persp
ectives into the assessment. As a consequence, justification of decisions b
ased on the assessment is provided by stakeholders having achieved agreemen
t. In this article, agreement is identified with wide reflective equilibriu
m to show that it indeed has the potential of justifying decisions. We work
out several conditions for this agreement to be achievable and just.