MR VISSER
Yes.  The value of superimposition has been challenged on the basis that the alignment and enlargement factors are too variable and you refer to Defaur - do I pronounce that correctly, or the article does, emphasise strongly that
"... this method cannot be used for positive identification, since the magnification and angulation of the original picture, are unknown.  It has more value in exclusion, than in positive identification ...",
would you agree with that last statement?