Favorite obsolete scientific theory

With the procession of science, some theories have been superseded or disproved.  What's your favorite obsolete theory?

 

Phlogiston theory - Wikipedia, the free encyclopedia

 

Flat Earth - Wikipedia, the free encyclopedia

 

Aether theories - Wikipedia, the free encyclopedia

 

Geocentric model - Wikipedia, the free encyclopedia

Poll Results
  • Phlogiston (9%)
    19/217
  • Flat Earth (57%)
    123/217
  • Aether (Various) (9%)
    19/217
  • Geocentrism (16%)
    34/217
  • Other - please leave a comment (10%)
    22/217

Comments

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