This week we have been looking at ballistics, guns, footwear prints, tyre prints and tool marks. It transpires that all of these are sciences in transition. There is much more room for opinion, particularly when it comes to identifying specific items like an individual screwdriver, for instance. Even footwear marks can be argued over – most things are a matter of opinion, although ballistics seem to be more reliable.
I have no intention of taking up crime scene investigation, but in future my enjoyment is being refined as more information is shared. Yes, I think it is worthwhile – good for the little grey cells, as Poirot would say.