Archimedes ran through the streets of Syracuse naked. Artists like the "naked truth". Archimedes was working on a "crown of gold". He was trying to separate the base metal from the gold. What is true from what is not.

That's what the CIA is supposed to do.

There are many ways to disguse a message, but an artist is restricted by the fact that there are only so many messages worth encoding in a legacy work.

Parts of the Rosetta stone translation refer to gold crowns of Ptolemy. "with them. And in order to make this new shrine to be easily distinguishable [both at the present day, and in future times, they shall set] upon this shrine [ten royal double crowns, made of gold and upon [each of the double crowns there shall be placed the [serpent which it is right and proper to make for the [double crown of gold], instead of the two Uraei"