Read again. there is no evidence the kids' bedroom window was left open IN ORDER for someone who managed to raise the shutter from outside, could slide it (the window) across and hence put his hand in anc use the strap to pull on the mechanism that raises and stops the shutters (up ) as PER Heribertos theory
Read what again?
Did you state somewhere "the kids' bedroom window was left open IN ORDER for someone who managed to raise the shutter from outside, could slide it (the window) across and hence put his hand in anc use the strap to pull on the mechanism that raises and stops the shutters (up ) as PER Heribertos theory"? because I certainly said nothing of the kind and neither did Heri.
Quote
"4. May 3rd. 2007: between 21:40 and 21:49 approximately the abductor, a burglar who was an Ocean Club employee or who had received information from an Ocen Club employee (and who had not the intention to abduct a child), took Madeleine without entering the apartment 5A, opening the window from the outside, without damaging it (the glass panes were closed but unlocked). Awakened by the noise and/or light from the opening, Madeleine went to the window thinking it was one of her parents, somewhat somnolent and very tired, and was taken by the burglar who panicked".
Heri: end quote
The demonstration shows how easy it was for an individual, who may have been opportunistically acting on his own, or with accomplices in a pre-planned operation to raise the shutter in about fifty seconds.