s ▁and ▁ 1 9 3 0 s ▁by ▁the ▁“ a . r .” ▁group ▁or , ▁more ▁precisely , ▁by ▁W ład ys ław ▁Str zem i ński , ▁Kat arz yna ▁Kob ro ▁and ▁Henry k ▁Sta ż ew ski ) ▁and ▁with ▁the ▁idea ▁developed ▁by ▁R ysz ard ▁Stanisław ski ▁( M u zeum ' s ▁director ▁in ▁the ▁years ▁ 1 9 6 6 – 1 9 9 2 ) ▁of ▁a ▁“ museum ▁as ▁a ▁critical ▁instrument ”. ▁These ▁ideas ▁are ▁further ▁expanded ▁in ▁the ▁assumption , ▁according ▁to ▁which ▁a ▁museum ▁is ▁capable ▁of ▁re - def ining ▁and ▁updating ▁not ions ▁per tain ing ▁to ▁art ▁and ▁culture ▁and ▁establish ing ▁social ▁relations ▁with ▁the ▁invol vement ▁of ▁art . ▁ ▁Through ▁exhibition , ▁research , ▁educational ▁and ▁publishing ▁programme , ▁the ▁Mu zeum ▁st riv es ▁to ▁practice ▁the ▁idea ▁of ▁art ▁as ▁a ▁way ▁to ▁experience , ▁feel ▁and ▁understand ▁the ▁reality , ▁which ▁was ▁a ▁part ▁of ▁avant - gar de ▁dream ▁of ▁cre ative ▁life ▁available ▁to ▁all . ▁ ▁History ▁of ▁the ▁collection ▁▁ 1 9 2 0 s ▁– ▁the ▁" a . r " ▁collection ▁ ▁Mu zeum ▁S zt uki ▁was ▁established ▁as ▁a ▁result ▁of ▁re organisation ▁of ▁Ł ód ź ▁museum s ▁in ▁ 1 9 3 0 . ▁The ▁core ▁of ▁its ▁collection ▁is ▁based ▁on ▁works ▁of ▁modern ▁art ▁collected ▁in ▁Poland ▁and ▁abroad ▁by ▁“ a . r .” ▁group ▁in