Unreinforced brick will indeed fall down in even modest earthquakes. In new construction it is possible to sink rebar into the wall, at which point it is at lea

Unreinforced brick will indeed fall down in even modest earthquakes. In new construction it is possible to sink rebar into the wall, at which point it is at least the equal of concrete (and certainly more attractive); however a lot of people don't want to bother with perceived time and expense and so we go back to concrete and stick framing. Much construction in California is penny wise and pound foolish. It is routine to omit insulation from the walls in new construction, never mind that it will pay for itself in savings on heating and cooling bills. Wooden houses can be destroyed in an earthquake if the quake shakes them off their foundations; fixing this is simple and easy during construction but, again, wasn't done for a long time. I believe the only reason it is done now is code requirements—it would not overly surprise me to learn that the builders can't be bothered even in new construction.