Mxsmanic wrote:
Why does it seem that the control yokes of small aircraft are always
turned completely to one side or the other in photographs? Is there
some sort of convention about doing this? A safety reason? Why is it
so common?

Without any airflow over the ailerons, it's kind of hard to hold
them in the center. As soon as the control flops over to one
side or the other, it tends to stay there.