#2776: Crystal Ball
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[A wizard with with a pointed hat, long hair and a large beard is sitting on a chair at the left side of a table. He is holding a crystal ball with both hands while he is looking into it. The ball has a reflection on the side towards Cueball who is sitting on a chair at the opposite side of the table with his hands in his lap.]
Wizard: Your future is hard to see.
Wizard: I can make out some hazy details in the center, but the off-axis components are particularly unclear.
[Caption below the panel:]
Wizards never did figure out how to fix spherical aberration.
(Sourced from explainxkcd.com)
Title text:They often use ball lenses to collect light at the ends of optical fibers, so when you look stuff up on the internet you're actually scrying through a crystal ball.