On Fri, 11 Dec 2015 10:27:29 +0000, The Natural Philosopher
wrote:

On 11/12/15 03:03, Bill Wright wrote:
On 10/12/2015 18:54, ARW wrote:

The voltage can change throughout the day.
Voltage variability is a natural phenomenon and has been happening for
thousands of years. It is absurd to say that human activity was the only
cause of the voltage increase from 1970 to 1997. If that were the case,
why has the voltage remained stable from 1997 to the present day?

Bill

But records only go back 50 years.

So you cant say what the voltage was in - say - the stone age.

Rock solid .