In this paper, we object to Michael Scriven's claim that the basic log
ic of evaluation is criterial and standards-based. We note that valuin
g is an integral part of perception and that valuing within perception
, repeatedly refined, is an even more basic logic of evaluation. We fm
d unpersuasive his claim that making the final synthesis ''governed''
will diminish bias, noting that bias will find its way into the requir
ed statements of need, function, standards and weighting. We offer our
alternative for disciplining the synthesis process, by urging more sy
stematic and demanding critiques of emerging interpretations and value
s, and by more deliberately using competing conceptual organizers (e.g
., goals, issues, decisions and elements of the rules Scriven advocate
s) as temporary and dialectical grounds for reconsidering the evolving
meanings of the program, including its merit and shortcoming.