Can an abandoned egg hatch?

I'm curious, can an abandoned egg actually hatch? It seems counterintuitive, given that eggs typically require warmth and care from a parent to develop properly. But is it possible for an egg that's been left alone to somehow come to life? I'm interested in hearing your thoughts on this, as I've heard conflicting opinions on the matter. Is it a myth, or is there some truth to the idea that an abandoned egg can still hatch?