there is no knowing

(there's) no knowing

There is no way one can be sure; no one knows or can tell. He's already very volatile at the moment—no knowing how he'll react to bad news like this. Unfortunately, there's no knowing if such an effort will actually translate to a meaningful, long-lasting improvement in the economy.
See also: knowing, no

there is no knowing

no one can tell.
See also: knowing, no, there
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