Who are some of the many that you have read? I see the Hindu author you posted, but I'm curious if you have any prolific historians of Russell's caliber. Would be interested to read them.
What you're learning is widely-accepted interpretations of empirical observations and data sets. Sure, you could go back to the primary data of Framingham study to verify that HTN leads to increased stroke risk, but you could also go back to Plato's original manuscripts to see that the ancient greeks were happy to use infanticide as population control. In both cases, the practical scenario boils down to us relying on expert opinion as a shortcut for doing the footwork ourselves. Neither of us have the time, energy, or resources to dig through the primary historical (or scientific) evidence for the topic we study, so we rely on expert opinion. Not sure why history should be treated different than medicine in your view, as they are both constructs based on empirical evidence, except history inevitably requires a more subjective analysis.
Also, you continue to offer the straw man argument that I take Bertrand Russell's word as gospel, when in actuality I'm merely stating that his opinion reflects a historical consensus among major scholars. Straw men arguments are the refuge for those without valid points, it's probably a good idea to avoid those altogether and represent opposing viewpoints accurately in these discussions.
Apart from some wikipedia articles and a far less objective Hindu author, you haven't offered a legitimate source opposing his views on infanticide, so my original assertion stands. I would be interested to read reliable & objective viewpoints that run counter to Russell's opinions, though. (He's an atheist, so I naturally consider him more objective than both Cahill and Frawley, though Cahill generally agrees with Russell)
I notice that you're using a Hindu's allegedly-biased perspective on the history of thought to counter Russell's allegedly-biased western views on the history of thought... You see how this is futile? The best we can do is identify historical authorities, hear their arguments, and judge for ourselves who is objective and accurate. I offer Russell as my most reliable source on the matter, what are your sources that we can use to decide for ourselves?