Historians of the Industrial Revolution have long debated whether living standards rose or fell for ordinary workers during the early decades of factory production. The 'optimists' point to falling prices for cloth and other goods; the 'pessimists' cite stagnant wages, lengthening workdays, and grim urban conditions. A newer line of argument suggests that the dispute may be partly irresolvable because the two camps measure different things. Optimists tend to track what a wage could buy, while pessimists weigh factors—autonomy, health, the texture of daily life—that resist monetary summary. One scholar proposes that the quarrel endures not because the evidence is thin but because 'standard of living' bundles together goods that no single index can render commensurable. The debate, on this reading, is less an empirical stalemate than a disagreement about what ought to be counted.