|Similarity: conformity of one or more - but not all - properties of two or more objects.|
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Anticipation/Wittgenstein: pointless: to explain it by the fact, as you anticipate "something similar" - similarity is only there with two present, distinct things.
Expectation is not dependent on some future things. - It may be that it remains unfulfilled. - It is all about fitting instead of similarity.
Similarity/Portrait/Wittgenstein: there are good portraits, which are not similar - Criterion for a Portrait: Intention - intention: but cannot be expressed in the portrait.
Only with respect to a projection rule things are similar.
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Equality/Wittgenstein: if you say something about the equality of lengths, you say something about the method - even equality of numbers can be determined by many different methods.
Vorlesungen 1930-35 Frankfurt 1989
Das Blaue Buch - Eine Philosophische Betrachtung Frankfurt 1984
Tractatus Logico Philosophicus Frankfurt/M 1960