Most of us are two young to remember this famous illustration by E. J. Pace in the 1924 book, Seven Questions in Dispute, by William Jennings Bryan.
Although the confessional liberalism plaguing evangelical protestantism a century ago is still with us in some fashion, it declined precipitously after around 1960, as the denominations most affected by it lost members to more confessional congregations or to sleeping late on sunday mornings.
However, the current form of "progressive Christianity" is based on similar assumptions about the nature of the Christian faith and the authority of Scripture, but it has led, not to an exaggerated faith in reason and the scientific method as it did in the early 20th century, but to an affirmation of the self and its subjective aspirations. Here is an updated illustration.