Whereas the basic income is typically conceived as a fixed amount that would be granted unconditionally and would be enough for a person to survive on, the National Dividend would vary depending on the performance of the economy. In other words, the dividend is indexed to productivity. No productivity, no dividend. The greater society's productivity, the greater the dividend. It is expected that, in a highly industrialized country, the dividend (in conjunction with compensated prices and massively reduced taxation) should be at least sufficient to meet each person's basic expenses and that its relative purchasing power vis-à-vis salaries and wages should also be growing as machines replace human labour in the productive process.