|Similarity: conformity of one or more - but not all - properties of two or more objects.|
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|Beck-Bornholdt / Dubben. Der Hund, der Eier legt Reinbek 1997 p.117
Similarity/Measuring/Proof/Beck-Bornholt: it is basically impossible to prove the equality of two therapies.
It can only be said that an existing difference was only overlooked with a certain probability.
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