ein bisschen Schwund ist immer
proverb[aɪ̯n ˈbɪsçən ˌʃvʊnt ɪst ˈɪmɐ]
You must allow for some unanticipated or unexplained losses. You should expect neither that things proceed perfectly, nor that they are perfectly documented.
ein bisschen Schwund ist immer is a German proverb meaning “You must allow for some unanticipated or unexplained losses. You should expect neither that things proceed perfectly, nor that they are perfectly documented.”.