&gt; I suspect once it becomes acceptable to not work a whole lot of people will be perfectly happy smoking pot and playing video games. It won&#x27;t take that many to break the system.<p>If the system is constructed so that increasing defections from taxable-income-generating activity (which isn&#x27;t just work -- capital income, after all, is taxed as well) decrease the real value of UBI (and, thus, the attractiveness of forgoing such activity in favor of other pursuits), then this tendency will be controlled and constrained within the ability of the productivity of the active economy to support.<p>As discussed in other subthreads of this thread, this kind of negative feedback is actually quite easy to build into a UBI system.