Think of it like a high school test, you submit your test to the IRS, who has the answers, and they tell you if you are correct. Also, the US is the only class

Think of it like a high school test, you submit your test to the IRS, who has the answers, and they tell you if you are correct. Also, the US is the only class who's teacher doesn't either show them the key or skip the test entirely. When I realized that some other countries have no concept of a tax day and don't understand the yearly hype train of US taxes, that's when I got really bummed out on how broken our system is.