Look, we impose fines to discourage some behavior. If you speed 60MPH in a 40MPH zone you get a fine. Go 80MPH and you might lose your license. And it discourages speeding.
So if you impose a fine, now called a tax, on earning money what happens? You discourage high earners. High earning people get that way because they generate lots of activity that others feed off of. Imagine how much advertising a successful real estate agent buys every year.
So why do we want to discourage that? We should make taxes regressive, with lower income people paying the highest rates to encourage them to work more.
And yet we have more high earners now than we did before the income tax. We have a more stable economy, with more years in expansion and fewer years in contraction than before the implementation of income tax. Not by a little either. But about double the expansion and half the contraction.
If your claims were valid, how would this be possible?
You're not actually proposing that the income tax did all that, right?
For starters we have many more people than we did in 1916.
The 16th amendment was passed in 1913.......but if you want to draw your lines at 1916, I suppose I can oblige. Seems a bit arbitrary. But I'm game.
In any case, we have probably proportionally fewer very wealthy people now.
Says who? You haven't done a bit of research on the topic. So by your own admission, you don't know what you're talking about.
Second, a more useful measure of economic health would be the earning potential of folks in the middle class. As that's where most people exist. A economy that had a handful of fabulously wealthy multi-millionaires and a comparatively poor middle class wouldn't be an indication of a working economic system. But a broken one.
Third, you refused to address the issue of economic expansion and contraction. We've seen far more economic expansion and far less economic contraction since the passage of the 16th amendment. And you don't seem to dispute this fact. If dramatically greater economic expansion is the 'effect' of an income tax, I say game on.