Classism in Elderling society? (spoilers RotE books incl Blood of Dragons)

[redchild]

Hmm, following that thought, I wonder why Elderlings used memory stone as their building material? It seems like that stuff lasts forever, so it's likely that was one of the main reasons they chose it for. But the stone is also used in a variety of ways, from transportation (the pillars and Skill-road) to information recording and storage. I think the warming platforms the dragons used in DH are made out of it too. But the ones used for buildings record the thoughts and experiences of people dwelling in it. They bring new meaning to the saying, "if walls could talk."

Could it be that Elderling cities were always under surveillance? If so, why?