How does the young warriors first dream propel the action of the plot

Read the excerpt from david foster wallace’s infinite jest. three faces have resolved into place above summer-weight sportcoats and half-windsors across a polished pine conference table shiny with the spidered light of an arizona noon. these are three deans—of admissions, academic affairs, athletic affairs. i do not know which face belongs to whom. which literary device is used in phrases such as “summer-weight sportcoats” and “polished pine”? allusion alliteration irony metaphor