You have only one liver, but it can regenerate. When you donate your liver, you donate *part* of your liver, and it regenerates (hopefully, unless you get really sick).
@dns: Yes, and just speaking for myself personally, it's the most fun when the discussions have some actual relevance to the cartoon. But, you know -- Don't mind me; knock yerself out. 'Bye-bye.
I don''t think there's any need to worry about the possibility that Dilbert's signing of the software services contract will prevent a future leader from being born. True, Dilbert can't live without his liver and it's possible any future children he might have had would grow up to be leaders in some capacity. But, realistically, what are the chances that Dilbert would reproduce?