text: what is "complicated" or "complex"? isn't it all relative?   complicated or complex to me means that there is more than one level of meaning, or several components to a structure or an idea.   add a few variables just to be sure.  "not easily understood all at one look" might be another way of putting it.   and yes, it does depend on the ability of the observer:  what i might find complex, you might see as 'relatively' simple.  it is all relative!