Quote ="Sal Paradise"No the gap is the difference between the nine years it took to produce someone and the 15 years I said i.e. 6 so 6/15 is 40% as I suggested? 6/15 is 2/5th i.e 40% not sure where you get 67%'"
You seem to be either shifting the goalposts because you are now aware of your error, or you are completely innumerate.
Quote ="El Diablo"Your figure for the gap is an over-estimate of 50%'"
He was incorrect, your actual over-estimate was 67%.
To which you replied:
Quote ="Sal Paradise"Your maths is not what it should be 9/15 *100 is 40%'"
Which was even further from the truth. Yes 6 years is 40% of 15 years but that's neither here nor there, it doesn't change the fact that your figure was 67% larger than the true value. Just man up and accept that you are wrong.