Q: You’ve listened to more than your share of conference calls in your day -
in general what are useful questions analysts can ask on calls and what are less constructive questions?

A: The all-time best quarterly conference call question -- which has never been asked -- might be:

“Management, during your many rehearsals for this quarterly conference call,
what practice questions made you the most uncomfortable, why did those questions make you uncomfortable,
and how did you answer them?”

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