I don't what you call it, but if you allowed to use lies to win an argument, then it is not a debate.
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@Bix
You can't really decide that Biden 'lost' the 'debate' when Trump's constant string of lies killed all pretense of it actually being a debate. Biden seemed a bit flabbergasted at the flood of lies spilling from 
's face, lies that went way off the question being asked of him.
I'd like to see Harris debate Trump but don't expect it to happen.