Also, one light-hearted comment about "estabilishig the European population" I forgot to add to my initial post:
To paraphrase a certain Czech comedy: Swedish novelist August Strindberg was caught blowing smoke from his pipe to the sink with water, trying to make gold this way. And we say: "Look how stupid idea was born in such brilliant mind." But isn't it better to say: "It was Strindberg who found out that you cant make gold by blowing smoke to the sink?" Someone had to try it. Someone had to discover this dead end and tell the world: "Not this way my friends." We can say that Plzen is true pioneer of discovering those dead ends in animal keeping...

To paraphrase a certain Czech comedy: Swedish novelist August Strindberg was caught blowing smoke from his pipe to the sink with water, trying to make gold this way. And we say: "Look how stupid idea was born in such brilliant mind." But isn't it better to say: "It was Strindberg who found out that you cant make gold by blowing smoke to the sink?" Someone had to try it. Someone had to discover this dead end and tell the world: "Not this way my friends." We can say that Plzen is true pioneer of discovering those dead ends in animal keeping...