What Is Consciousness?

The idea is roughly that a system is conscious if there's something it's like to be that system. There's nothing it's like, presumably, to be this glass of water on my desk. So i find this is a definition that's very vivid and useful for me. But as a rudimentary statement of what consciousness is, i've always found that to be an attractive one. It doesn't work for everybody. To what i've found over the ears, is it this phrase of nagles is incredibly use for at least some people, in getting them on to the problem. Other people here,  something different in that set of words, like you say, what is it similar