Ok, now, which character from the Simpsons would be capable of reading the causality sequence, understand the math and reliably evaluate the evidence actually given about police efficiency by absence of crime and disorder? Because if Lisa said directly or herself intended the above story to be analogous then I'd call her naive and confused. Given what is known about the relevance of law enforcement, not considering low crime to be---all else even remotely approximating equal---strong evidence about the effectiveness of the police would be utterly absurd.

Perhaps he should have said "conspicuous absence". An absence of tigers is only conspicuous if you would otherwise expect tigers everywhere.