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Several decades ago, it started to become fashionable among some academics to raise philosophical objections to the traditional scientific method and the pursuit of logic and objectivity in trying to depict social reality. Among other things, they dismissed the value of using experimental design logic and unbiased, validated measures as ways to assess the effects of interventions.

Although various writings have debunked their arguments as “fashionable nonsense” (Sokal & Bricmont, 1998), some writers continue to espouse those arguments. You might encounter some of their arguments – arguments that depict the foregoing hierarchy as obsolete. Our feeling is that these controversies have been largely laid to rest, so we only briefly describe some of these philosophical controversies here.

Using such terms as postmodernism and social constructivism to label their philosophy, some have argued that social reality is unknowable and that objectivity is impossible and not worth pursuing. They correctly point out that each individual has his or her own subjective take on social reality. But from that well-known fact they leap to the conclusion that because we have multiple subjective realities, that's all we have, and that because each of us differs to some degree in our perception of social reality, an objective social reality, therefore, does not exist. Critics have depicted their philosophy as relativistic because it espouses the view that because truth is in the eyes of the beholder it is therefore unknowable and that all ways of knowing are therefore equally valid. We agree that we can never be completely objective and value free, but this doesn't mean that we should leap to the conclusion that it's not worth even trying to protect our research as best we can from our biases. It does not follow that just because perfect objectivity is an unattainable ideal we should therefore not even try to minimize the extent to which our biases influence our findings. Furthermore, if relativists believe it is impossible to assess social reality objectively and that anyone's subjective take on external reality is just as valid as anyone else's, then how can they proclaim their view of social reality to be the correct one? In other words, relativists argue that all views about social reality are equally valid, but that our view that it is knowable is not as good as their view that it is unknowable. Say what?!

Some have argued that an emphasis on objectivity and logic in research is just a way for the powers that be to keep down those who are less fortunate and that if a research study aims to produce findings that support noble aims, then it does not matter how biased its design or data collection methods might be. However, critics point out that the idea that there is no objective truth actually works against the aim of empowering the disenfranchised. If no take on social reality is better than any other, then on what grounds can advocates of social change criticize the views of the power elite? For example, during the Trump administration his spokespeople at times dismissed facts that they didn't like by proclaiming to have their own “alternative facts.” Those spokespeople were dismissing objective facts as just someone else's version of reality that had no more credence than the Trump version of reality.

You may or may not encounter philosophical objections such as these, but there certainly continue to be political leaders and others who consistently call into question the value of science and objectivity. We have found that these controversies are less and less frequently raised by experts in EIP and that for the most part practitioners and researchers alike are keenly interested in focusing on how to use research to support the best services possible for clients and communities. While philosophical objections have been largely laid to rest in the human services field, we acknowledge that more practical concerns represent important challenges to address. Engaging in EIP takes time and resources that are precious and seem to be ever decreasing in the context of human services. Understanding research can seem intimidating, and it's not always clear how to apply what you learn from research in your practice. We believe that these practical challenges are more commonly on the minds of practitioners. The question is no longer whether or not we should engage in EIP, but rather how to successfully engage in EIP. Therefore, we have focused on more practical issues throughout this book by providing tools and resources that we believe will help you most efficiently use your time to identify, evaluate, and apply research findings in practice.