Dramatis personae -
Me, on trusty Breezer, followed by:
The scene -
Gently descending two-lane road, approaching an intersection
Act One -
Hearing cager getting close, about 20 yards from the intersection, I signal a left turn and move over toward the double line
Act Two -
Vroom! Cager, apparently not adept at interpreting hand signals, guns it and crosses the double line to pass me on my left.
Act Three -
I hang my left unimpeded by cager, who has proceeded straight through the intersection, having picked up a full second or two by pulling this stunt rather than simply waiting for me to turn and get out of his way.
Fortunately nobody else was around. But it did make wonder if signaling might in fact be counterproductive or even hazardous on some occasions.