Let's revisit the OP inquiry, shall we?
"
Christianity--Has it been a net gain or loss in world history?"
In terms of furthering intellectual inquiry; in supporting scientific discovery/revelation; in promoting thought
beyond rote adherence to Scriptural dogmatic principles/commandments?
I'd have to reiterate a big, fat,
NO...in cold, candid conclusion.
Could it have been
worse?
Sure.
Could it have been
better?
Likely, but I would persist in my evaluations/conclusions that science and reason, (if and when) allowing both disciplines to prevail over raw human emotion and superstitious beliefs alone...presents a
more hopeful and prospectively illuminating path to enlightenment, revelation, and any relevant existential "truths" of human existence. Myths, superstitions, folklore, and faith-based beliefs rely upon claims that can neither be verified, or falsified. All emotional appeals/claims present poor foundation for establishing informed and rational conclusions of a broader perspective that only demands evidential substantiations and informed specualtions derived therefrom.
I said:
Then it would only be fair to ruminate upon the directly manifested effects that Christianity has managed to deflect...
You offered:
Yes we can analyse the effect that Christianity has had on this world. We just cannot analyse the impact of Christianity in terms of counterfactuals and without doing so we cannot form a conclusion about whether Christianity is a net gain or loss.
Perhaps too true...
...but then...in fair perspective...shall we argue for or against indoor plumbing as a "net gain or loss"? Howzabout light bulbs? Or electricity? Or the internet? All present their own accounting litany of "plusses and minuses".
Let's consider...we can
conceive of "
a world without cell phones" (for those of us over the age of 40 or so). Was "
the world" a "
better" place
before the introduction of cellular technology, or is it "
better"
now? Is a sense of privacy and solitude (removed from the immediacy of phone contact) more valuable than the availability of immediate access to our most intimate and personal moments of "alone-time"?
Indeed, what is "gained", versus what is "lost within the very recent advent of cell phones? Is mere convenience, or (perhaps) majority popular (or proliferated) religious belief, to be
the prevailing and defining standard of what constitutes a "gain"?
Does Christianity even compete with flushing indoor toilets in such a comparison?
The reason for this is the Humean sceptic line with regards to defining causation as an observation that A regularly follows B since this cannot be used to infer that if not B then not A (i.e. we cannot give an account of causation in terms of counterfactuals).
True enough...
If this is rejected, then we still have the difficulty of gathering the necessary historical information to make such an account properly grounded. And I mean specific information about exactly the way the world was 2000 years ago.
Hmmm. Whilst true that we can not claim to accurately account of every and all things/events that transpired 2000 years ago, we can (and fairly so) apply the same established sets of evaluation and review to any claims attributed to either past or present. Even exegetical (Biblical) historians often
disagree as to the claimed "truths" (as accounted) within (the "historical" record of) the "Bible". Now what?
One might readily falsify or "disprove" similarly irreligious claims espoused by a particular, and disconcerting individual, but appeals to emotion poorly serve the broadest opportunities afforded by either enlightenment or experience.
I said:
I but argue that mankind's perspective (on whole) need not be reliant upon faith-based appeals to emotion and unsupported claims...
In which case I agree but feel that you evaluating Christianity in terms of positive and negative and not net gain and net loss. I again point out that the current political climate that causes us to gain these liberal values is derived directly from a history that includes Christianity and even if the sole purpose of Christianity is to provide such a climate and then die, it would still be a part of reality that we would not wish to have never been.
Hmmm. An interesting summary, which deserves further review.
I said:
WE can act to affect direct and immediate "positive" changes.
You offered
Of course when we talk about the future then we can only enact what we perceive to be positive changes and hope that these translate directly into a net gain. We have no rational basis to do so but the mind is currently too small to do anything else. It could be that your positive changes result in the next Hitler. I am reminded of a Simpson's episode in which world peace and the destruction of all weaponry allow Earth to be enslaved by alien invaders.
Ah, but this is really just begging the question itself, and only proposes an argument premised upon adverse consequences/outcomes. Indeed, it may be rational (enough) to obliquely assert that: "
The future is unknown (or unknowable)"; but
only if any/all impacting influences/conditions/knowledge are utterly removed from such an analysis. True enough that
no one in any present moment can reliably predict/validate/substantiate any claim of
absolute certitude of future events/outcomes (beyond the claims of religious beliefs); but
reasonable speculations
can be (and often enough are) borne out as not only
likely, but inevitably realized
realities of established and evidential
fact. Such is all but the stuff of testable hypotheses and theories. These particular premised "conjectures" are NOT wild and spurious claims/guesses...or faith-based claims...but summary predictions that are bound by presentable confirming evidences of same.
[I do not "predict" that either the human condition would be--by some default--intrinsically
improved or
enhanced by the complete rejection of Christianity in particular, or faith-based superstitions/mythologies in general. I simply submit that it's
never been tried; and that religion, on it's face and as a whole, remains a consistent
failure in affecting
any lasting or meaningful "net gains" (or results) in otherwise significantly altering any otherwise
lasting and
abiding continuations of human suffering, persecution, poverty, and authoritatively imposed injustice...that fail to adequately remonstrate or eradicate the fears, ignorance, fealties, or stupidities that
religion insists as [the] lone provisor of truth, wisdom, insight, and irrevocable "
answer".
I but advocate
reason as an
operative humanistic perspective. Christianity is neither "good", nor "bad" (per se). It's just a demonstrably ongoing failure in effecting it's stated and specified goals by (it's own outlined) methods of faith-based beliefs. Maybe, just
maybe...
some day...
reason will be embraced and established as
the "
norm"...and superstition.myth. legend, and supernaturalism will
earn their due as wishful thinking and hope...against almost all prevailing circumstances.
When I said:
I must concede that my drawn conclusions are (predominantly) predicated upon prospective evaluations of resultant gain/loss...
This is the position I find myself in as well. However, whilst I disagree with many epistemological and ontological claims offered by Christianity as well as the results that those claims appear to have had on this world, I find myself unable to say that I would prefer a reality in which Christianity had never existed.
OK. I will be like John Lennon, and only "
Imagine" other possibilities...