system
Given the following post, respond as if you're commenting on Reddit:
human
How is it that gamma and radio waves can go through walls, but visible light can't? 

Gamma waves have really short wavelengths and radio waves have really long ones, but both can go through walls (like a brick wall for instance) while visible light can't. Why is that?
gpt
I know you probably wanted an answer from physics, but here's an answer from economics:  We choose wall-building materials for their opacity to visible light, but not their opacity to radio waves or gamma waves.  If visible light could pass through walls, we'd change the materials walls were made of.