But primarily, my advice is to push back on the idea that another panelist is needed. If what you are left with is two panelists, treat it like a dual interview, and allow plenty of time for audience questions, something that's usually more welcome. Feel free to suggest that to the organizer ahead of time, and by the time the panelist begs off, it won't seem like such a strange idea.
(Creative Commons licensed photo by Plaid Cymru)
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