A small roll can have more than one outcome
Rule 9 normally leaves a ball moved by natural forces to be played from its new spot without penalty. Important exceptions include a ball already lifted and replaced on the putting green, and certain movements after a drop, placement or replacement into another course area or out of bounds.
Imagine a ball resting naturally on a fairway slope and then rolling a few centimetres in the wind. Compare a ball that has already been marked, lifted and replaced on the putting green before the gust arrives. Watching only the final movement hides the history that distinguishes them.
Rewind before the gust
A close camera can prove that the ball moved while still omitting the earlier marking or relief procedure. To understand an official returning the ball, trace how it came to occupy the original spot. The previous action may be more informative than measuring the roll.
Use two questions in that order: what caused the movement, and what had happened to the ball before it moved? The first identifies the natural-forces issue. The second tests whether the ordinary outcome is subject to a stated exception. This avoids both common overstatements: that wind always requires replacement, or that wind can never require it.
Questions answered
Does wind always mean play from the new spot?
No. The rule includes specified exceptions.
Why does an earlier marking sequence matter?
A lifted-and-replaced ball on the green has special treatment.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.