In what ways are "officially sanctioned listening services" better than half-hourly checks by parents?
We would have a reasonable degree of certainty that a listening check was conducted every half hour. Kate's book suggests this was not the case.
We would have a reasonable check on Madeleine at 9.30pm, rather than the half hearted attempt by Matthew Oldfield, which seems neither to be listening nor visual.
The parents could have locked the patio door, since none of the checkers would have been entering 5A.
We would know, with a reasonable degree of certainty, when the shutter was raised, rather than the sloppy timescale we have.
We would have a situation where the party was told the location was not suitable for such checks, and decided to put a completely different solution in place. One of the things that bothered me was why the Paynes decided to take a decent baby monitor with then, while the other parents did not, nor did they simply nip into the electrical shop next to Baptista to buy one. On that front, I found out that baby monitors that worked over the distance from block 5 to Tapas were ubiquitous and cheap in 2007.
Instead we have ambiguity over the checks, an unlocked patio door, reliance on Kate that the shutter was raised and the window open, and a timescale of just under an hour for Madeleine's disappearance.
Might I suggest that if an official service had found the shutter raised, the window open, and Madeleine gone then the GNR might have been called much earlier than 10.41pm?
Please don't tell me the substitute put in place was as good as or equal to a service in a hotel or an enclosed compound, because it wasn't. Those supposedly intelligent people couldn't work out that between the 6 conducting checks, they could have shared the load even doing it much more frequently than half-hourly.