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Translucent != transparent, but you might be on to something.
Maybe it works better on slim drives with a lower ceiling. Larger drives with space above the disc might allow the laser to refract and generate garbage.
Edit: okay, nevermind, it really is completely transparent. Here’s a picture:
This is actually stupid. At no point during the manufacturing process did anyone mention how CDs work?
The vinyl being transparent is fine, vinyls work by a needle touching the surface, optical discs work by… optics!
I mean the CD does work. But not with all players... Not sure what makes some work and some not. Laser wavelength?
Most likely the sensitivity of the electronics and whether they consider the surely weak signal noise.