How many books on your astrology shelf contain a phrase like this one: If your Mercury is in Gemini or the 3rd House . . .? With two cents’ worth of logic, the conclusion is inescapable: the author is telling you that the two configurations mean the same thing. If A equals both B and C, then B equals C and there’s not a single scrap of wiggle room about that anywhere. The trouble is that in this case, B does not equal C. Houses and signs are not the same. They do overlap in meaning, as we will see. They are far from unrelated. But if you treat them as if they were interchangeable, your astrological work loses focus. Still, this is a painfully common error among astrologers. Even though many of those books I mention contain useful perspectives in other areas, when it comes to this issue they are the culprit.  Learning to avoid this pitfall is not hard and it will take your work to the next level. Listen in....