I'm trying to come to a better understanding about these things, but reading articles about them is somewhat unhelpful. I have some questions, but they might not make sense given my current understanding of these matters and I hope that some dialogue will improve both my understanding and my questions.
For instance, the Wikipedia article says:
...these units are also known as natural units because the origin of their definition comes only from properties of nature and not from any human construct.
So, to me this seems to imply something about nature and not something about the way we observe or measure nature. Is it a Planck's Unit that implies a discrete as opposed to continuous universe?
I recall either reading about or having someone tell me about how Planck's Constant--or maybe it was the Planck Unit or maybe the Planck Scale--(and here how do these three relate to one and other?) is the smallest interval we are able to measure. If this is so can anyone explain why?
Further, if this interval is the smallest we are able to make observations or measurements at, then doesn't this limitation imply something about our methods as opposed to something about the natural world?
I'd appreciate any helpful input regarding the above and I might have more or follow up questions: please, walk the Planck with me (I know, *groan*, right?).
Curiosity didn't kill the cat, opening the box did!