There is an old saying that goes: “A conservative is a liberal that has been mugged.”  The opposing saying is “A liberal is a conservative who’s been arrested.”
I sometimes wonder what the Mormon equivalent of this would be. I came up with a few listed below:
A progressive Mormon is a TBM with a gay child.
A TBM is a progressive Mormon with a child healed from cancer
An Ex-Mormon is a progressive Mormon that was shunned by their family
So what could you add? What causes a seemingly orthodox TBM to become a progressive, or even an ex-mormon? Conversely, what causes somebody who has left the faith to return to full belief?
For me it was a mixture of my inquisitive mind, linked with reading Sunstone magazine in our LDS Institute building. The Institute Director subscribed to it and left it laying around for the students to read. This was the late 1970’s before it was widely known. (nobody knew it was “bad”)
So one could add for me: “A progressive Mormon is a TBM that reads uncorrelated material”
What can you come up with?
 The original quote is “a neo-conservative is a liberal who has been mugged by reality” and is attributed to Irvine Kristol