I find it hard to fathom why a new simulation is being called for. It is either a delaying tactic or it is hoped it will generate new evidence. If the latter, and such new evidence gives no further clue as to why the aircraft crashed, then it takes the debate no further on. If, however, the simulation produces a possible failure mode, one has then to ask why the MOD and Boeing were unable to discover this years ago - again it doesn't leave them in the best of light. Besides, as a former simulator engineer I know how doubtful it is that one can arrive at any meaningful conclusions from a simulation of this ilk (as I understand it) - it is hard enough ironing out the bugs in the simulation let alone looking at possible unknown failure modes in the electronics. Having said all that, I do not know the full details of the proposal so stand to be corrected if I have jumped to the wrong conclusions about how and why the simulation is to be conducted.