Inferences on inferences are impermissible

Fed. R. Evid. 1001(3) ("3. Original. An 'original' of a writing or recording is the writing or recording itself or any counterpart intended to have the same effect by a person....For purposes of the federal best evidence (or original document) rule, an "original" of a writing is the writing itself or any counterpart intended to have the same effect by a person executing or issuing it; the "original" of a recording is is the recording itself or any counterpart intended to have the same effect by a person executing or issuing it; the "original" of a photograph includes the negative or any print taken from the negative; and the "original" of data stored in a computer or similar device includes any printout or other output readable by sight shown to reflect the data accurately.

Hirst v. Gertzen, 676 F.2d 1252, 1263 (9th Cir. 1982) (holding, in civil rights action against county, city, and government officials for prisoner's death in jail, that evidence of deputy's prior acts of violence which was introduced to establish the identity of the murderer, was inadmissible because even...The negligent or incompetent character of an agent or employee is an essential element of a negligent entrustment claim. If the negligent character or incompetence of the agent or employee is at issue, evidence about the negligence or incompetence of the agent or employee is not barred by the rule prohibiting the use of a person's character to show the person's conduct.

Hynes v. Coughlin, 79 F.3d 285, 290-292 (2d Cir. 1996) (holding, in prisoner's action against guards for unreasonable use of force, that evidence of plaintiff's prison disciplinary record was inadmissible where it was offered to show that he had an aggressive character and that he was therefore likely to...A person's character, or propensity, is inadmissible to show that person's conduct on a specific occasion.