1) Contribute by your actions to the death of a child then tell me if your resultant psychological condition could be described as sane.
2) The GNR/PJ that night failed in many things. Letting the bins be collected before being properly checked and not checking the nearest landfill site was obviously two of them.
On point 2), I have been woken at 4AM by lorries collecting the rubbish. I think it is easier for them to do it when there is less traffic. I don't know what happened in 2007, since I wasn't here then. So the first requirement would have been searching all 188 bins by tipping out the contents. This on the basis of a missing child, no evidence of a forced entry, and the Tanner sighting.
Is there anything in any other similar crime in which the bins of an entire district were searched in such a manner? If there is, you have to take into account that a man walking could have been in neighbouring villages BY THE TIME THE GNR WAS CALLED. The radius never was restricted to Luz.
As to checking the nearest landfill site - I don't think so. I very much doubt that anyone in the PJ was aware that a single landfill site serviced the entire western half of the Algarve. Anyone following that up would have taken days or weeks to work out what was going on. Think about it. Where is YOUR landfill site?
And ours is NOT restricted to rubbish from Luz. Rubbish from much bigger places including Lagos, Portimão and Albufeira all go on it. Within a day the stuff would have been covered over by tons of rubbish, from far and wide.
If this type of action has been carried out previously, I am not aware of it, so it would be an interesting update. If it hasn't, it remains one of those things that is easy to say, assuming it has not been thought through.