Everything is Interaction!? Everything appears in an interaction and therefore everything is a self-defined and hence self-similar interaction according to Eugene Savov in his book Theory of Interaction - http://www.eugenesavov.com In his world of similar multiscale interactions everything is everything at scales of its own. So he proves the famous Heraclitus' citation "everything is everything" in a quite new all-explaining context, created from one self-reproducing interaction. Are there real bodies, which are not sources of interaction? Is there anything without an origin and a source?