> Effectiveness of targeted ads directly translates to effectiveness of mass surveillance. Assuming you're correct about the technical points of efficacy, we c

> Effectiveness of targeted ads directly translates to effectiveness of mass surveillance. Assuming you're correct about the technical points of efficacy, we can still turn this around as a social problem and hypothesize that the willingness to use unproven, annoying targeted ads directly correlates to the willingness to use intrusive mass surveillance. You bought a vacuum here are more vacuums might directly translate to you attended a protest so you're a permanent malcontent. Worse yet, the "metrics" of social monitoring aren't as black-and-white as future purchases, so badly-used surveillance might falsely think itself useful simply through confirmation biases.