Nothing is proved until the case reaches court...first the evidence is collected...you are quite wrong and les is right...madeleine missing IS evidence of abduction...just one small piece...however just because you have evidence of something...doesn't make it true....it gets a little boring but you confuse eveidence and proof
The Smith sighting is evidence of abduction, strengthened by the fact that Martin has changed his mind about the man being Gerry.
Absence of evidence that Kate and Gerry were
simultaneously absent from the restaurant at any point on May 3rd is evidence of abduction (it precludes the necessary collusion for a plot of the type postulated by Amaral).
The McCanns' normal and relaxed behaviour on May 3rd (up to the point of Kate's alert) is evidence of abduction.
People who actually
know how to read body-language say the McCanns' body-language on May 3rd (and following) say the McCanns' spell
innocent!
That is evidence of abduction ...