>, then does it not suggest the tone is not a good signal for quality? You highlighted my spelling mistake and I updated the post to correct it. My examples w

>, then does it not suggest the tone is not a good signal for quality? You highlighted my spelling mistake and I updated the post to correct it. My examples were meant to be opposites. There are many bad books out there with a conversational style. There are good ones too. The problem is that readers are mislead by the easy-going tone of the first few pages and therefore lulled into thinking it's a quality book because of its chattiness and informality. Likewise, many authors writing in a conversational style think they wrote an easy-to-understand book because it's conversational. That cause & effect isn't true. One can write a beginner book that has clear teaching with or without a conversational style.