The loss that leaves no trace
Every other channel tells you when it fails. A ranking slips and the chart shows it. Cost per lead climbs and the invoice shows it. Traffic falls and analytics shows it. This one is different: the customer asked an assistant, got two or three names that were not yours, and called one of them. There is no impression to count, no click that did not happen, no line anywhere in your reporting. You experience it as a quiet week and explain it as the season.
