kkll wrote:
Well that got cut off somehow. Here's the rest:
. . . to believe something that you find unbelievable. Not believe it sincerely, anyway.
There is no such thing as believing something insincerely so let's just get that out of the way to start with. Someone who does not believe something sincerely does not believe it - they may pretend they do, wish they did . . . but they do not.
Still, the larger point is not as cut and dried as some make it out to be. It is true that one cannot simply decide to believe something. For instance, I cannot simply decide that I believe that 2 + 3 = 7. And even on more complex issues (such as belief in God), one cannot simply choose to believe. "Today, I've decided that I believe in God." The whole notion is obviously wrong. HOWEVER . . .
However, people can and do choose to believe things in a more indirect way. This is true of most people and perhaps all people. A good example is someone who decides to follow the Christian faith. Now, initially they may have significant doubts and might be better described as wannabe believers rather than believers. But being on that wannabe path often leads one to make decisions about what to do, who to hang out with, what to read, what to watch . . . And often those decisions put one on a path wherein they are relatively insulated from doubt-inducing material/opinions/facts and inundated with faith-reinforcing material/opinions/facts to such an extent that eventually they truly believe what they once wanted to believe. That is, they indirectly decided to believe.
Of course, it is not just Christians who do this. Practically everybody does this on matters large and small. The Trumpettes do this all the time. They feel a certain way, are annoyed by various aspects of our society, and choose to migrate to Fox, Breitbart, etc. Within this self-reinforcing bubble they gradually come to believe what may have once seemed preposterous to them (and does seem preposterous to liberals). The exact same thing can be said of liberals.
So, I would rate the statement, "You can not decide what to believe" as only somewhat true. Over time, most people decide what they wish to believe and even succeed in convincing themselves of the truthiness of what they want to be true on a great number of things.