Why does slam poetry all sound the same?

[brandontoh]

I would say that the problem with slam poetry, or actually just poetry both written and spoken, is summed up nicely in a Don Marquis quote.

'If you make people think they're thinking, they'll love you; but if you really make them think, they'll hate you.'

As far as performances go, being able to do that will entertain people, but hardly allow any engagement on the intellectual level.