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Prior to our class discussions, life to me was one of those words that you couldn't define without using the word in the definition. Obviously my life is different than that of a fruit fly who may live to see several hours while comparably, I may flourish for several years. What abouit a tree that spends hundreds of years in the same spot while I spend the duration of my much shorter "life" with the mobility to wander the planet. When class concluded on Friday we had successfully established a definition that encompassed all the different varieties of life, and I was satisfied. But now I wonder whether or not our definition is too broad. Can something be alive but not have life? Are those that are brain dead or vegetative alive? Is an embryo alive (from the moment of conception)? Is there something or someone that we've overlooked?