earth and stone

The logical or most common choice at that moment would have been to choose the energy tunnel of space; however, his instinct led him to discard it.

So far, he had been doing well with that intuition that he was experiencing for the first time in his life. Why change?

He walked through the circular room, perhaps it was time to try something more conventional. Finally, he decided on the energy tunnel that Ikky assumed was from the stone.

These tests were designed to use energies or skills as a base or support to be overcome. Although Ikky had managed to overcome the first two based on ingenuity and willpower, he could not forget the role that his skills, sixth senses, and enhanced perceptions had played.