Would be interested in people's comments on this video, especially the chart that is progressively shown e.g. @7:39 (but the video explains it systematically).

It addresses two common themes that just seem to go round and round in forum discussion on this topic.

[youtube]Sz2tTDFmCzY[/youtube]

https://youtu.be/Sz2tTDFmCzY

Edited by uncle sepp: 21/11/2015 03:11:17 PM

Edited by uncle sepp: 21/11/2015 03:15:10 PM