The Importance of Transparency

If light can pass through it, basically is what it means to be transparent. Or information from light passes through it without any distortions. And even glass, which we think of as transparent, does distort a little bit. But still, you can see your finger, right? The same way you can see through water and you cansee through air. You can identify things, you can recognize things, even if the path of the light is slightly changed.