"Think of it as the Egyptian hieroglyphs" - and we too use ideograms every day. %, &, +, $ etc. What else are they? "we've lost the link to the original concept

"Think of it as the Egyptian hieroglyphs" - and we too use ideograms every day. %, &, +, $ etc. What else are they? "we've lost the link to the original concept" - which concept? And why (I mean, what indicates that this actually happened)? "The metaphors of icons don't work" - again, since when? Why? What substantiates this claim? "A iOS7 example, look at the browser icons at the bottom of the screen, a square with an arrow on top, two squares next to each other and two squares on top of each other..." - I agree and I'm sure there are countless examples of poorly designed icons, but it doesn't invalidate the very concept of ideograms. Just like the existence of milions of incomprehensible error messages doesn't really undermine the value of an error message in itself :) It's just poor execution of an otherwise valuable method of communication