By "game" I meant this whole scenario. It is like a strategic game with very limited options. And staying put is not an option because you would break dweste's rules. I agree with everything you and other people said about staying put and danger of the crossing, but this time this is not about surviving in quite probable real world scenario but about surviving in a scenario where you have to cross the river or you will die. Therefore I called it a game.
For example you can imagine that a lava from nearby volcano is slowly closing in on you and you have to cross the river at this very place to escape.

In other words dweste forces us to think like McGyver - every possible idea counts.

On the other hand it's a good thing that you and others emphasize what should normally (in more probable scenario) be done, so when some less experienced people read it, they will get the warning.