Once again the debate has been sullied by a failure to educate the Public as to what "nett zero" actually means in practice. Attention is always given to the word "zero", with scant attention being paid to the adjective "nett". When that adjective is used in the context of this debate, it alters the meaning of the word "zero" from 'nothing' to "no increase". We have heard of the business accounting term "nett profit". A nett amount of money is the amount that remains when nothing more is to be taken away. That is, all costs have been deducted from all the income earned. We also hear of it in "nett taxable income", which is the income which is subject to tax after all legal deductions have been made.
The following simple equation shows that, contrary to the idea that nett zero means no emissions, the term simply means that if the total amount of emissions either removed, or not created in the first place, is equal to the total amount of emissions generated, then there would be no excess of emissions. The level found at the beginning of a sampling period would be the same as at the end of sampling period.
"Nett Zero" recognises that emissions will be created. Emissions will continue to be produced. Therefore it is logical to say that "nett zero" can never be reached. However, all efforts should be taken to have Total Emissions approach a zero value. In other words, reduction of man-made emissions, no matter how great or small, is a worthy endeavour, but reaching zero man-made emissions is a practical impossibility.