The larger point of this exercise was to clarify and examine each individual argument against the practice.

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That is certainly the case - and it is an argument that is put into practice every day in The Hague at the international war crimes Tribunal for the former Yugoslavia.

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Yes, there is the argument that they gather best practice from across an industry and can thus pollinate, cross-fertilise.

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Organizations and individuals that oppose the practice of double charging make the argument that people who "disturb" passengers in other ways should also be charged.

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