While psychoanalysis as field has moved from the ideal of technical neutrality to a vision of the therapist as more human real, and empathically engaged, relatively little attention has been paid to the implications of this evolution. For Freud, technical neutrality provided an important protection against bias and suggestion, one problematized by a view of the psychoanalyst's participation and influence as intrinsic to the therapeutic enterprise. The impact of this change on the evaluation of mechanisms of change is contextualized and discussed by the author.