How does Odysseus show intelligence by coming up with the plan to blind Polyphemus?

Odysseus displays his intelligence in this situation by remaining calm. And not freaking out like the rest of his men. Odysseus was under a lot of pressure, since if his plan failed, he and his men would all die. And if it did work, most would escape alive. Because of his intelligence, Odysseus was able to create and carry out a massively complicated plan successfully.