A study conducted by Y&R, in conjunction with scholars at Kings College and University of London, found that advertising executives ground their decisions with a mixture of gut instinct and accumulated knowledge, as well as the prevailing view of senior creative team members.

OK, advertising has lots of issues to contend with. One of them is brand safety, which was brought into stark relief over the New Year's weekend when YouTube star Logan Paul posted a video of a suicide victim. No question YouTube has a Logan Paul problem.