Following Mary Douglas, to say that this constitutes the divination of sacrificial entrails is not an analogy - that is precisely what it is.

BBC: A Point of View: And all shall worship money

Another of their important functions, according to Celtic tales and mythologies, was they were able to exhibit a range of magical powers, such as divination and prophesy, healing, levitation, shapechanging and they could even control the weather.

BBC: News | UK | The day of the Druids