Why I think the crime was an abduction by a stranger to the McCann and their seven adult holiday friends?
The first thing I did was a system analysis of all the witness statements made about what happened that night between 20:50 and 22:10.
It is normal to find inaccuracies in a single witness statement. So a system analysis allows you to do a global insight of all the situation, adjusting normal discrepancies between statements, or between statements and given physical or psychosocial conditions.
Each statement is a component of the system, and there exists a physical and psychosocial environment too, and you have to consider the interactions between all of them to gain insight, to discover the mechanism of what really happened.
That is why I went to Praia da Luz 3 times, a total of 26 days, not to interview witnesses, but to gain insight of the physical and psychosocial aspects of the environment.
I knew that in a system analysis a lot of minor discrepancies emerge. Even I knew that, given the quantity of witnesses involved, I would find a few major discrepancies. It is absolutely normal.
I found two major discrepancies:
The first: "When he arrived there, by vehicle, at around 21:10, he remembers that next to the Tapas reception, he saw a vehicle [...] A few minutes later, when it was around 21H20, he heard some clamour, which made him leave toward the restaurant, a few meters away, and was then informed that a child had disappeared." Arlindo Epifanio Goncalves Fernandes Peleja (PJ files pages 471 to 473).
The second: Jane passing near Gerry and Jes.
But these are two normal, though major, discrepancies. I am interested in the global situation, which I can adjust from all the testimonies. The major discrepancies, if in a normal quantity, can be discarded, and the minor ones, if in a normal quantity, adjusted. This was I found here.
You can take an isolated single major discrepancy, even a minor one, and make a world of it, a total conspiracy. You have to study the complete system.
(But it is very interesting that I never heard nobody saying "Why Arlindo Peleja was lying about the times? To whom was he covering up? Were all the Tapas Bar employees accomplices of the crime?" ... and so on).
So I took the global picture, and I was unable to explain it without an abductor who was an stranger to the McCann and their seven adult holiday friends.
(I do not believe neither in extraterrestrial visitors nor in parapsychological bilocations).
So, I do not want to lose more time discussing this, I prefer to do my very modest contribution to find who was the abductor.
Heri.