Conversation so far:
What happened with Ben Carson on 2016?
On March 11, 2016, a week after Ben Carson ended his presidential campaign, he endorsed Trump, calling him part of the voice of the people to be heard.
What else did Ben Carson say about Donald Trump besides calling him part of the voice of the people to be heard?
At the press conference, Ben Carson said Donald Trump had a cerebral side

Question: What did he say that drew criticism?
Self-contained rewrite: What did Ben Carson say about Donald Trump that drew criticism?