The question is whether you are consistent. Forensic questions can be answered with varying degrees of certainty, unless you are arguing that absolutely nothing can be known about the past.
...unless you are arguing that absolutely nothing can be known about the past.
FWIW perhaps you could tell me what it is you know about perception. You percieved my post to have been a challenge to the science of forensic examination when in fact it didn't address that subject in any way shape or form.