Whilst I agree that we can never have exhaustive knowledge of any event, if it was properly investigated then we could know to reasonable level.
However the failure of the DPD to properly investigate the scene, witnesses and even keep the prime suspect alive. The deliberate choice by the WC to seek to ensure that the likely correct but very politically expedient answer of a LN shooter was the only conclusion to their material and their deliberate exclusion and minimisation of any information that may have run counter to their politically motivated outcome, has left large gaps in the field.
Once the escape route was determined, every attempt should have been made to ensure that the path was free to be traversed. Exact locations and actions of everyone who may have been in that path should have been determined. Adams, Styles, Garner and Dorman should have been all properly checked to confirm the movements of Adams and Styles through the escape route. Dougherty's location needed to be confirmed. as the admitted closest employee to the crime scene, who was in the vicinity of the escape route. Hine and Reid's testimony should have been sort to be reconciled, because as it stands it is contradictory on a surface level.
However too much time has passed and these key witnesses were not properly questioned and there testimony added to the data grid through which the event can be understood.
