Maya Forstater

@alexcobham - actually figure comes from d between Swiss export price & world price (x Zam to Sw export volume) - or have I misunderstood?

@MForstater Zambia 80% is that difference indeed; but the problem documented applies to *both* prices to Sui below world P, & from Sui above

@alexcobham - ok, so the two articles I linked to both misunderstand the claim being made in the Zambia-Switzerland-Copper example then?

@MForstater Framing also fine if you consider the price declared as received by a major commodity trader as a reasonable world market price

@MForstater But my sense is that you think the whole exercise problematic, rather than any individual's framing of it in passing.

@MForstater If so, do you think it would be more productive to discuss your substantive concerns?

@alexcobham I think it's productive to understand the evidence, & I think this case is widely misunderstood (I did too when I 1st heard it)

@alexcobham - substantively I think if sw traders were selling commodities much more expensively than anyone else, it wld hv been noticed!