▁returned ▁to ▁the ▁wh ims ical ▁science ▁n erd ▁he ▁once ▁was . ▁ ▁Gr iss om ▁is ▁often ▁regarded ▁as ▁well - ed uc ated , ▁but ▁unusual ▁in ▁his ▁approach ▁toward ▁his ▁work ▁and ▁social ▁life . ▁In ▁the ▁series , ▁some ▁of ▁his ▁comments ▁and ▁actions ▁can ▁be ▁seen ▁to ▁d um bf ound ▁his ▁co - work ers ▁and ▁super iors . ▁His ▁relationship ▁with ▁his ▁sub ordinates ▁in ▁the ▁office ▁is ▁port rayed ▁as ▁being ▁a ▁father ▁figure ▁to ▁the ▁team , ▁but ▁very ▁professional ▁in ▁his ▁work . ▁ ▁Despite ▁being ▁calm , ▁Gr iss om ▁can ▁get ▁angry ▁when ▁interrupted ▁during ▁an ▁inter rog ation ▁as ▁seen ▁in ▁season ▁one ▁episode ▁" Table ▁St akes ," ▁when ▁he ▁ber ates ▁Nick ▁Sto kes ▁for ▁calling ▁him ▁out ▁of ▁inter rog ation . ▁ ▁In ▁addition ▁to ▁being ▁a ▁genius ▁and ▁somewhat ▁of ▁a ▁poly math ▁beyond ▁his ▁career ▁training , ▁he ▁exhib its ▁As per ger - like ▁tra its . ▁In ▁" C aged ," ▁it ▁is ▁hint ed ▁that ▁( in ▁fact ) ▁he ▁has ▁As per ger ' s ▁synd rome . ▁Another ▁character ▁on ▁C SI ▁who ▁shares ▁these ▁kind ▁of ▁tra its ▁is ▁his ▁sub ordinate ▁( and ▁ex - w ife ), ▁S ara ▁Sid le . ▁She ▁once ▁ins inu ated ▁that ▁Gr iss om ▁was ▁a ▁mis anth ro pe ▁when ▁he ▁quoted ▁her ▁Th ore au ' s ▁Wal den . ▁ ▁In ▁the ▁season ▁two ▁episode