stands to some reason that those that were highly skilled at pattern thinking could come up with some broad arch types to place people in. Not to say it an exact science or even a science, but I can see some value in using astrology as a broad vague sort of tool. Sort of the way many one may see differences between those that grew up on hippie communes as oppose to military brats, someone might see bbroad overarching patterns that separates a cancer from an pieces. Of course no a days much of the world live much less seasonally and so this thinking has fallen out of favor. That's not to says there was never any valid reasons for this method of thought and its just people being superstitious