Lyric discussion by ramthar 

Cover art for Goodbye Blue Sky lyrics by Pink Floyd

"When the promise of a brave new world Unfurled beneath a clear blue sky" is an allusion to "1984" a book where perfection and utopia is sought by totalitarian control and population control, ect. this of course is much the same as Hitler's Nazi Germany. Hitler was promising his people a "brave new world" "beneath a clear blue sky" and freedom from the burdens they were given following WWI. so "When the promise of a brave new world Unfurled beneath a clear blue sky" isn`t meant to instill hope, but actually has very scary connotations. read "1984". scary stuff.