I realise I am being a bit pedantic, but I find it really difficult to accept ‘as fact’ that which we don’t have any evidence for, and that which can have more than one possible inference. Surely reaching a conclusion from an event that has two more more possible inferences is still speculation?
Edited for clarification.
The jury must consider what logical and obvious inferences can be drawn from the evidence.
If more than one inference can be drawn, and one doesn't support guilt - then a not guilty verdict has to follow.
For example, I find suicide to be speculative. There is no real evidential foundation to infer she committed suicide IMO
Libby blundering into the river by accident, i would normally find to be a bit too coincidental and convenient, unless the evidence is showing it more or reasonably likely it happened that way (@Tortoise 'analaysis)
When the evidence leads in one direction, then events that are normally rare, become more probable