Lecture: ARC Straightwire
No Sympathy
Hubbard lectures on his definition of affinity, and relates it to his "Know to Mystery" scale. The Know to Mystery Scale is closely related to the Tone Scale.
Now, ARC of course means affinity, reality and communication. The first thing we run into a cropper on in trying to translate this, is the word affinity. Affinity is so much itself and is so relative, that we get into a considerable, to use a Texas word, hassle, in trying to interpret it in an auditing command generally.

Now, affinity has been very technically defined, and so has reality and so has communication. This is not a discussion of the ARC triangle. But for your information, the word affinity embraces everything from the Know to Mystery Scale. See, it embraces the lot and—as far as these aspects are concerned. But it means—it means the feeling for or the feeling with or the lack of the feeling for or the lack of the feeling with, don’t you see, and it definitely contains this connotation of feeling about, you see. And it’s not enough to say emotional response, because a fellow who feels effortful about effort is still experiencing affinity about effort, see, his affinity about effort.

Now, sympathy, empathy, all of these things come into this, and it becomes one of these very broad subjects. And the word affinity is not an adequate word to discuss these things because the word has not existed in actual fact in any language. Because this concept has not been well embraced by any language. We’re up against the semantics of the situation. But if you take the Know to Mystery Scale and substitute it for the word affinity, and you use emotion and misemotion and such things as that, you’re going to find the pc responding to it.

Now, some people are only going to respond to the idea of love. They don’t respond to emotion at all. Emotion isn’t there, you see, and so forth. But nevertheless, love, this expresses affinity for them, you see.

And now when we say the emotional Tone Scale, we’re talking about just a fraction of the Know to Mystery Scale. So everything on the emotional scale is under this head of affinity, clear from "hide" all the way on up. And there is your expression.

Now, how many words then can be used in any command containing the word affinity? That’s a lot of them, isn’t it? So, when we clear this command, we have to clear it in an understanding of what we mean by affinity. And we have this, this is all graphed. I mean, we’ve got it. That’s broadly the Know to Mystery Scale and then part of the Know to Mystery Scale, the middle section, of course, is the whole Tone Scale. So we’ve got a lot of words there that we can clear.

And we’ll find the pc chronically resident at one or another of these levels, and that of course is the level he will respond to in processing.
— L. Ron Hubbard
Lecture 12 June 1963: ARC Straightwire