Mr President, I ask a supplementary question. I refer the minister—

Senator McEwen interjecting—

I will. I refer the minister to the statement in the House of Representatives by the Treasurer yesterday. Far from the Treasury modelling being a crystal ball, as Minister Wong seems to wish to put it, he said:

… there is not a hole in the modelling … The government has full faith in the … modelling …

Does the minister have full faith that the core assumption of Treasury modelling, that world carbon prices are expected to range from A$29 to A$61, is correct—yes or no?