Nobody knows

No.  Nobody knows.  We wonder, how can you NOT know? We expect everyone else to know when we ask.
"Does anybody here know?" 
"He said he knows someone that might know.  But, (shrug, not really believing it), I don't know". 
In reality, many time we don't know ourselves. But here is the thing; we don't really care.  I say I care.  Everyone says they care. But do they really?  I say I care because people will talk behind my back about how I don't care. 
'He's the one'. 
'Did he really say he 'doesn't care?'. 
'That's what I heard.  But, I don't know'. 

Something has to be done.  Something SHOULD be done.

"You think somebody should do something?"
"I don't know. Who cares".