Sunk Cost Trap

See: Sunk Cost.

It's gonna suck. The investment will never work out. Water parks in Alaska as a play on global warming? It ain't that warm out yet, pal. So the $3 million sunk in building the water slide that the penguins now use for ski ramps is gone. It won't help to put in another $2 million to make the slides glow-in-the-dark or play music. You're done. It's over.

Don't fall into the sunk cost trap by wasting yet more money on this bird-brained idea. It'll never fly.