Having said all that, parental involvement in the child's death or disappearance - a much more likely scenario in terms of statistics in the abstract - in this particular case, would entail the parents' guilt of other major crimes (perverting the course of justice in several countries; serious fraud, to name but two) as well.
Is it the parental involvement that would entail those other crimes or is it the insistence in proclaiming abduction from bed, unprecedented event that the media echo chamber multiplied, ruining any human control ?
An accidental homicide would be far more plausible than an abduction from bed or even from street, but there's a rub, it would mean that the McCanns didn't say the truth and the idea that such a beautiful couple of doctors could have lied is unbearable, so unbearable that... it can't be. Any explanation will do, but the lie is taboo.
Denying reality.. such a common process though.
We know nevertheless that, without real motive, the McCanns didn't say the truth to the media which they criticized for... their lies..
Really revealing, Mrs McCann tells in "Madeleine" that they lied as if the fact of revealing it launched her on the track of truth (fault confessed is half redressed). Revealing that she lied deleted the lie and purified her.
There no other reason for this confession.
Allow me to correct you, SH, the Ecclesiast, not David, said
there is nothing new under the sun. He said he was David's son but it doesn't seem he was Solomon.