By PETER JACKSON

FOR the best part of 20 years, Scotland could always be relied upon to find a way of losing in Wales, undone by a chronic tendency for too many fingers to press the same self-destruct button.
A host of head coaches from either side of the Equator, from Matt Williams to Vern Cotter via Frank Hadden, Andy Robinson and Scott Johnson, watched the biennial Cardiff mission fall apart. The majority came to grief through self-inflicted implosion.
Scott Murray’s sendingoff in 2006, for example, left his team undermanned for a whole hour in what ought not to h...