Maybe the old boy wanted to turn, but he just wasn't sure where. Actually, that has happened to me a time, or two. I mean where my turn signal failed to cancel and I didn't know it for a while. In the old days, the blinker unit was loud enough that you could hear it. I haven't checked, but I don't think you can hear them at all on newer vehicles. And unless you stare at the dash all the time, the little flashing light doesn't catch your attention very well.