There’s so much conflicting information online about hot tubs, that it’s hard to know what to believe.  Hot tub ratings and reviews can be extremely inaccurate because unlike the automotive industry, there are no dedicated objective professionals who make a living by carefully researching and testing every model, then dispassionately reporting their honest conclusions.  

Online content is mostly a random hodgepodge of agenda-based articles composed by people with vested interests, or personal opinions of people with very limited overall knowledge about the subject. 

This chapter explores some concepts related to this predicament, to help give you some perspective.