nerd challenges logic, beside empty chalkboard copyspace

young man glasses wiped chalkboard copyspace nerdy expression doubtful inaccurate logic professor input ready insights seeks discourse expects clear remarks student clarity skepticism flawed face dark informed logical questions comments graphics advocates clearer statements hints indicates imprecise reasoning uninformed challenges desire suggests awaiting information demands disapproves disapproval illogical urging nerd empty front ample available conveys chalkboard available