I agree that you probably should be prepared to handle such scenarios.
I don't agree that this is a good reason that doing such a prank is harmless. The sales person might not have been prepared. They may have been having a bad day already. They may not be confident that power cycling would have solved the issue and thus may have been extremely stressed out going forward, ruining an (important?) presentation.
Probably I'm reading too much into a casual retelling now, but from what I can read: The fact the sales person was panicking should've been an indicator for OP to help him out. At that point OP should've empathised with the sales person instead of make things worse.
It's not because "Oh you should know how to fix this" may be true, that it's not a dick move to throw a fellow human in distress under the bus.
I don't agree that this is a good reason that doing such a prank is harmless. The sales person might not have been prepared. They may have been having a bad day already. They may not be confident that power cycling would have solved the issue and thus may have been extremely stressed out going forward, ruining an (important?) presentation.
Probably I'm reading too much into a casual retelling now, but from what I can read: The fact the sales person was panicking should've been an indicator for OP to help him out. At that point OP should've empathised with the sales person instead of make things worse.
It's not because "Oh you should know how to fix this" may be true, that it's not a dick move to throw a fellow human in distress under the bus.