Not only optional
Very intelligent and funny podcast; you always learn something you didn't know
Benny3.14 via Apple Podcasts · Sweden · 10/14/16
More reviews of Completely Optional Knowledge
I love this show so much! There is humor and knowledge. People also ask weird question which is great! Please keep it up!
Kuechi pilipino via Apple Podcasts · United States of America · 11/05/16
Love this podcast! It's so strange and interesting! I just wish they'd put out more episodes!
Marla Johnson via Apple Podcasts · United States of America · 08/30/17
Very informative, interesting, well presented podcast.
clint wolf via Apple Podcasts · United States of America · 11/24/16
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