You've said it a million times, but why do we use the phrase, "rule of thumb?"

This week I thought our cliche lesson could be a little less gross. The reason why we use the phrase, "rule of thumb," makes complete sense. Farmers using their thumbs sounds way easier than bringing a tool with them planting each seed.

Though of course I'm thinking about how different people have different sized thumbs...

According to Buzzfeed, this is why we say it.


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