Introspecting a bit, I realize that my question was motivated not sy Angelina so much as by various refusals I have encountered to give a probability/​frequency estimate, even when people are well-positioned to give one.
I think it is often motivated by a tendency to withhold information in order to maintain power in human interaction; but in many cases its the first and second options above.
Thanks, satt and zaine answered it.
Introspecting a bit, I realize that my question was motivated not sy Angelina so much as by various refusals I have encountered to give a probability/​frequency estimate, even when people are well-positioned to give one.
I think it is often motivated by a tendency to withhold information in order to maintain power in human interaction; but in many cases its the first and second options above.