The Presence of Nothing

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By Baxter Black.
I was explaining about pregnancy testing to a young veterinary student. She plunged her arm into the cow and palpated. After a studious attempt she said, “I can’t feel anything. Maybe she’s open?” “Maybe,” is an acceptable diagnosis in some places but it doesn’t impress the owner of the cow. “Not feeling anything,” is not a diagnosis. Concept #1 in the cow vet’s Principles of Preg Testing is understanding that “Open” is not the absence of something; it is the presence of nothing.
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