If the germ theory is relatively new, how do they think fermentation was happening (like wine, ale, yogurt etc.) thousands of years ago?

Question

If the germ theory is relatively new, how do they think fermentation was happening (like wine, ale, yogurt etc.) thousands of years ago?

In: 613

Answer 1

Same as why people thought stuff that went up would then go down even though we hadn’t discovered gravity yet.

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Stuff just did other stuff nd people didn’t look into it any further.