Is There a Sharp Edge to Consciousness?

The idea seems to be that there's a sort of sharp point where it switch us from being unconscious to being conscious. And we need to detect whether that line has been crossed or not. Does this way of thinking assume that there is, that consciousnessis ae really come a kind of sharp edged in man? Is that a possibility? Do you think? Or os jus, does the approach tt youare considering assumption that there is a clear, a fairly clear, sort of a signature of consciousnesswe i don't think it can assume this?"