What reasoning is this? Especially with the crime rate being at an all time low which would cause for less parents getting killed by thugs/mobs/debt collectors/etc.
Blake wasn't born within the eight year time gap. Blake was born when Gotham was a hellhole, as were his orphan peers. The point is that there had to have been other orphans who lost there parents by murder, but why is it that only he figured out Wayne was Batman?
Answer: he felt the "connection" yo.