Former South Bend, Indiana Mayor Pete Buttigieg visits the Times boardroom for his endorsement interview. The editorial board challenged Buttigieg on his time at the consulting firm McKinsey, his campaign’s missteps in courting black voters, and the details of enacting his public health option. Plus: inscrutable gym PowerPoints, friending Mark Zuckerberg, and a bettered-flavored mayo. Find the unabridged and annotated transcript of Buttigieg's visit to the board at nytimes.com/endorsements. Produced by At Will Media.