Grumpy Old Geeks People Ben Greenfield Person Ben Greenfield 2 mentions in 1 episode The podcast host whose statements about vaccines are criticized in the discussion of Jack Dorsey. Mentions 329: Patines Del Diablo Mar 18, 2019 22:11 You're talking about Ben Greenfield, aren't you? 22:27 Vaccines do indeed cause autism. He tweeted in early February.