"How has it abandoned it? It MAY have made it a bit cheaper for companies to reduce their ETS liability, but it does not change the emissions one single bit. Not one iota. Zip zilch nada nought."
If reducing the price makes no difference to its effect why not half the price again? If reducing from 23 to 15 makes not one iota zip zilch nada nought difference then it's obviously insensitive to price so we could make it really low .... Like zip zilch nada or nought and by your reasoning it will have the same effect
