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…in reply to @TatianaTMac
TatianaTMac +1 I’ve found the cozy suite layout for economy seating an interesting design. By shifting seats backward in relation to each other people could essentially share armrests without knocking elbows. I’ve not seen an airline actually do this yet though. skift.com/2015/04/16/the-new-economy-seat-concept-that-will-have-passengers-booking-the-middle-seat/