My wife (who is an electrical engineer and makes about $150k with bonuses because she is in management) brought up a good point.
Engineers are not really into flash and are more concerned with utility and substance. They are more likely to purchase places close to their employment or good school districts (which can explain to a certain degree why places like Poway, Rancho Bernardo, 4S Ranch, Carmel Valley can hold up their prices better than other places). The idea that engineers would want to move into places like La Jolla or the coast is kind of antithetical to their thought process.
Engineers are about function. Those who buy in La Jolla rarely purchase for that reason.