Mariano I think that the point that Philippe (our national butcher) is trying 
to make is the following:
If by design a serializer takes the perspective that it will be able to load 
old formats and ensure
evolution all the time then you have a really cool serializer.

Now why in fuel it is not possible to have 
        FuelMaterializer load: aFile

                load using the default = current format

        
        FuelMaterializer load: aFile asOfVersion: 1.4
        Of course this can be much slower but when you want to load data of the 
past you are just happy that this is 
        working. 

So would not be possible to 
        milestone formats
        get the default working fast
        get old version loading slowler but loading.

Because then we get a win win situation.
Stef

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