Actions shall be undertaken until such time as it becomes obvious that said actions are not providing the intended result.
Nature lives by this every second of every hour of every day. Humans generally follow this too. You’ll call your dog only so long before giving up. You’ll wait on the phone only so long. You get the picture. So, what’s the big deal? I’m glad you asked.
There’s one organism that not only ignores this law, but willfully and intentionally violates it on a daily basis. This organism is called: government.
The government organism will continue dumping money and labor into useless, aimless projects until the money either runs dry or attention is brought to bear on the absurdity. Running out of funding is not a garanteed termination either. Money is typically syphoned from other sources, usually those more critical than the one being wasted on, in order to keep it going. The attention part is usually what kills these evil rejects of natural selection. However, it almost always ends up with those who are really to blame getting away with blaming it on others, who take the fall and punishment. Let’s try to enforce the law, shall we?