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Not all hypotheses need to be good. In fact, many of them are terrible. It’s just that when you’re trying to understand the world, you might find yourself believing that there are tiny humans living inside the heads of sperm, and we're here to tell you, that's not how it works.

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Journey to the Microcosmos is a Complexly production.
Find out more at https://www.complexly.com

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SOURCES:
https://www.google.com/books/edition/...
https://www.researchgate.net/publicat...
https://royalsocietypublishing.org/do...
https://royalsocietypublishing.org/do...
https://royalsocietypublishing.org/do...
https://embryo.asu.edu/handle/10776/1924
https://embryo.asu.edu/pages/preforma...
https://link.springer.com/article/10....
https://www.nature.com/articles/nrmic...
https://www.nature.com/articles/nrm3370
https://www.ncbi.nlm.nih.gov/pmc/arti...