Tone. "A style or mode of expression" according to Noah Webster.
I am a firm supporter of healthy debate and dialogue, and greatly encourage it with the caveat that it is respectful of others and non confrontational in nature. I often use the expression "the only thing we are sure of is ............ were not sure". There are very few "absolutes" in the subjects we pursue, debate, and study in this hobby we share here thus some disagreement is inevitable. As long as that debate is respectful of the other it's a symptom of a healthy forum of discussion, and we all learn from it. As Bob has so clearly stated this is a friendly, if not the friendliest Forum of all associated with the hobby. As your Moderator I'm pleased to say that 99.9% of the posts I read (and I read them all!) are not only interesting and enjoyable but, importantly, knowledgeable, polite, and considerate in tone and presentation. As a group of like minded individuals with common interests and values we would not want it any other way methinks.
This Forum is one of my "happy places", I truly enjoy the privilege of sharing my passion for WW.I Aviation and all that subject holds with the great bunch of folks here whose company I value and respect. We don't often meet directly but when we do I've found the experience is always positive and enjoyable.
Des founded this site on the principles of fairness and friendship and our new Administrator has maintained that as our guiding principle, with that in place we cannot go wrong. I think we are in great shape!
Cheers,

Lance