If someone criticizes a TED event, it is now obvious that they will not be invited again to attend or present (this follows a series of nonsense articles). However the organizer feels he is entitled to criticise his guests as he pleases, however this implies a contradiction of the TED principles. An example follows below of the criticism from the organizer:
“I know I shouldn’t say this about one of my own speakers,” he said on Twitter, “but I thought Sarah Silverman was god-awful…”
Perhaps TED speakers ought to present Slavery sucks, as one speaker did.

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