This colorful drawing is a tree of world religions. From a poorly understood past, represented as the twisting vines of ideology in the trunk, the myriad human interpretations of the divine are shown branching out like tendrils on a vine, groping for something to grab on to. Searching, searching, but never finding. New tendrils reach out with the never-ending confidence that they’re the one true religion.

Example 1: Tree of religion

The trunk expands into named religions 3000 years ago. Here’s one small fragment (the outer shell is the present day, with modern denominations in green, and each curved gray line represents 100 years of evolution):

The tree details the evolution of the great Asian and Middle Eastern religions. Though it ignores religion from the Americas, Africa, and the Pacific, it makes a heroic attempt at what it does attempt to cover. It nicely documents the complex project that human religion has become.

Example 2: Church’s many views of government

Consider a very different look at the varieties of church. This one plots American Christian churches on a two-axis chart. The axes consider how big a role government should play in providing social services vs. how big a role it should play in imposing morality.

Here again, we see the dramatic differences in the many variant forms of American Christianity. For example,

• The Southern Baptist, LDS, and Church of Christ want more government involvement in morality but fewer social services.
• Unitarians want the reverse: more social services provided by government but less government involvement in morality
• Black churches want both: more government services and more legislation of morality
• Anglicans, Congregationalists, and Presbyterians (PCUSA) want neither

Example 3: Map of World Religions

Don’t forget the Map of World Religions (longer discussion here). Contrast the stable map of world religions (Roman Catholics in red over here, Hindus in green over there, and so on) with the map of world science, which is just one color. New and better ideas sweep the world of science within a decade or two, but an established religion isn’t interested in better ideas. It already thinks it has the truth and has no interest in changing.

Search for the truth

If religious claims were as obviously correct as the claim that the sun exists, everyone would quickly agree. That’s not the world we live in.

Alright then, suppose that religious truth does indeed exist, but it’s fuzzy or cloudy. We see, but as if “through a glass, darkly.” Why then aren’t worldwide religious beliefs at least converging on the truth? It would be like evolution, with false beliefs gradually falling away and correct beliefs encouraged and strengthened, either by divine intervention or because they matched up better with reality.

The tree of world religions above makes clear that religion is doing the opposite—diverging instead of converging. Christianity has fragmented and morphed over time as new cults and sects form. We see that same fertility in other religions. The only commonality we see across religions is humans’ interest in the supernatural.

This disconnect between religion and the reality that would ground it makes plain that religion is just a man-made institution.

Asking which [religion] has the best evidence
would be like asking which of the Three Stooges was the smartest.
— commenter Greg G.

Photo credit: The 40 Foundation