For better or worse, I tend to assume that people here either know or can easily find out how to do something, but the what is not always obvious.
A great example IMO is the thread titled "This is what's working for me!". And although Dave went into some detail about how to do certain parts of it, the "what" certainly opened up my mind to a lot of different possibilities. The how was pretty much obvious.
So how much explanation is reasonable when responding to questions here?