When is it best to write "can't" versus writing "cannot"? Are they interchangeable in every situation?

The irony of the idiom is that one would expect to be able to eat the cake that he or she owned. In that case, possession of the cake would logically come before usage of the cake: You cannot …

9 "cannot not say" would only rarely be used in English, and only in very specific circumstances. In particular, this is not a simple double negative. "cannot not" does not mean the same as …

It seems that "cannot help but" was ungrammatical two centuries ago, but it's been in use for the last 100 years, and now appears to be reasonably widely used. See this Google Ngram. So (2) …

It's pretty common, especially in video games' mission objectives, to state: A person X must not die. Would this be rapidly different if constructed like this? A person X cannot die.

I'm looking for a word that defines that something is out of our control in a business sense. For example, we can't control the postal delivery time, so it is... (out of our control). Needs to be ONE

8 Both are acceptable, but cannot is now more common. OED has this much to say about cannot: (ˈkænət) the ordinary modern way of writing can not: see CAN v. Notwithstanding, in some …

A ten-percent growth rate is an aspiration Aspirations are typically things that people or organisations want to achieve, think they can, but cannot guarantee that they will. In business …

Possible Duplicate: “Can hardly wait” versus “can't hardly wait” These two seem to be opposites of each other because of the additional "not" in one of them. However...

Oct 29, 2010 · Why is “cannot” spelled as one word whereas other similar constructions such as “do not,” “will not,” “shall not,” “may not” and “must not” are spelled as two words (unless they …