If any of the respected names in our profession (AQR, Rayliant Global, Research Affiliates, GMO, etc.) write about their tools and methods, statistical facts, probabilities of outcomes, reasons for good or bad performance, we all know they are in business and charge for their services.

We need to consider all research that appears to be based quality work. If it doesn't interest us, we can drop it and get on with other activities. If it does interest us, we can investigate and verify to our satisfaction.