It is one of the more obscure ideas in physics, frequently misunderstood by students and experts alike, so researchers are trying to refine their understanding of the Heisenberg uncertainty principle.
Are you wondering what the heck the HUP actually means? I’ve had requests for a detailed layman’s explanation, so I’ll start working on something. Meanwhile, this MinutePhysics video pretty much explains it in a minute.
SixDay Science 
Are you certain about that?
No, I have nothing of real value to add to this :)
I dunno, but any degree of certainty about this must mean that I’m uncertain about whatever is complementary to whatever it is we’re talking about being certain about.
“We demand rigidly defined areas of doubt and uncertainty!”
THHGTTG! FTW!