The Minister, in his speech and many other contributions yesterday, talked about the need for certainty and how this bill was going to bring about certainty. I want to ask some questions around trade-exposed industries and the automatic phase-down of allocations. We heard from submitters in select committee, and it certainly wasn't their view that this bill was bringing certainty. I can't imagine a world in which, until 2050, we're going to not need steel and aluminium and concrete and glass—those things are going to be required, and National always made a provision to allocate trading units to trade-exposed industries, like steel and cement and aluminium, so as not to force the closure of those industries and risk thousands of jobs and potentially carbon leakage overseas. Our policy was not to phase out this assistance until other countries—in our region, at least—had introduced a carbon cost, and none have done that as far as I can see. So I want to know what the Minister's thoughts are on that, because we are putting those industries at risk, because the bill phases out support at a rate of 1 percent and then 2 percent and then 3 percent. 