It is a little known fact that soap can be used to make bubbles.
It is completely irresponsible for you to post this information on the public interwebs. I demand that you delete your post at once, or I will be forced to back trace your IP and report you to the cyber police. Don't try to raise any kind of First Amendment defense, because as we all know, national security trumps freedom of speech, and due to your carelessness a terrerist may learn how to make bubbles of doom.
So, if you pay 30% taxes, then you had to earn $142.85 to pay the plumber $100, for which you got less than $70 worth of services. In the end, $142 of your dollars bought something less than $70 worth of services.
But by your logic, I only had to do $100 of work to earn the $142.85 (you say the plumber does $70 of work for the $100). So there's no double dipping.
We are each entitled to our own opinion, but no one is entitled to his own facts. -- Patrick Moynihan