Science in the elevator

Him: My biggest problem now, something I have been struggling with for weeks, I just can’t get anything done while this continues.
Her: Oh, my, so is it pretty serious?
Him: I just can’t deal with anything and I’m loosing sleep…
Her: How bad is it, really?
Him: They just won’t uptake cobalt. They just won’t. And it’s been weeks, you know.
Her: Yeah, I hear ya.
—overheard in the elevator just now.

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