Ghosting and icebergs

I had dinner last night with a former student who recently interviewed for a new job. He had gone through round one, round two and final-round interviews, the last with the company`s CEO. Then silence. No call-back, no offer, no rejection. He followed up and still nothing. He had been ghosted. My young friend thought it was rude, but I subscribe to the iceberg theory. You only ever see 1/9 of the full picture.