Yeah true, it’s not the most easy to apprehend. I agree, only forward and backward would be enough.
Yes it was intended! I should have gone more in depth with the mechanic, but I was missing time. The goal was to make interactions with the world (bomb explosion, bullets, moving objects) light up the world. The idea would be that you try to discover the world by bringing light to it, and at the end, it lights you up (internally, in a spiritual sense maybe).