So you would work equally hard to earn 5k and pay no taxes than to earn 10k and pay 50% taxes?
Hate to be a pedant but this is a fantastic oversimplification and certainly doesn't take the marginal utility of money into account. Otherwise... how do we explain tax accountants, havens and loopholes? IOW, some people work hard to make a good living via tax avoidance! Just sayin'

