Do you mean meaningful in the bull** jobs way or the moralistic way? I find the moralistic version confusing. I usually hear it applied to CEO pay, which last year was 350x the average worker. But what will ever feel like a fair or just differential? 7x? 3x? And what would be a fair metric? Are dentists less or more than social workers? What about dangerous jobs, are lumberjacks worth more than coal miners?