Conversation so far:
what did Rem Koolhaas propose about the European Flag?
The idea of a visual language inspired a series of drawings and drafts, including the Barcode
What kind of symbol was proposed by Rem Koolhaas to be used on the European Flag?
The barcode seeks to unite the flags of the EU member countries into a single, colourful symbol.

Question: why did they decide to unite the flags?
Self-contained rewrite: why did Koolhaas and his think-tank AMO decide to unite the flags in their proposal of the European Flag?