The examples you use are not synonymous with human reason, a trait unique to us. These animals are intelligent enough to be able to use simple tools/solve basic puzzles etc. this is really just their instinct helping them to perform a task (notice that your dog will perform a trick for you; it isn't reasoning whether or not it should do it, it's simply saying "if I do this, then I will receive praise/a cookie". They don't take the discussion any further than that). If animals were able to reason, they'd have formed actual civilizations and advanced just as we did. We are the only creature able to ask, to wonder about life itself.lostclause said:I don't think our ability to reason is so special. My example of Alex the parrot still stands, maybe they can't do it as well as us but they can still manage it. Dogs have the same ability to puzzle solve as a ~4 year old. Apes have figured out how to use sticks to get ants, using their powers of reason or not? This blurs the line even more, at least according to your definition, since they can both reason and are genetically similar to us. Again, we stand out but we're not alone. Are all flying birds eagles? Are all amiphibians frogs? A single characteristic, no matter how much we excel, does not seem to qualify it. Are great athletes separate species? Walker, a famous NZ runner and gold medal winner, was also genetically different, having an abnormally large heart. New species? He excels, reasons and has a major genetic difference.
Note that reason isn't the only thing separating us from other animals; in my opinion it is simply the most important one.
That is pretty stupidYes, but they were simply an example. Some people I've talked to before have defined a human by the number of chromosomes (and one idiot by the number of cells).
Again, I feel that you are missing the point. Cancer is not the norm (though it is tragically common these days). In a normally functioning person, DNA is very ordered. I'm not sure how to explain this again. Also, white blood cells destroy pathogens; they can't stop a mutation of any kind from occurring - this happens at the nuclear level.Cancer? Anyway, most mistakes are destroyed by the white blood cells before there are any problems.
Say you have three of the same car, say, a Viper, but each car is painted differently. You wouldn't say "well, the red one is a Viper, but since those two aren't colored the same, they must be different cars." In the same way, humans are different from one another, but we are all the same species. There really is no use in declaring one type of human as "the norm" either (the most recent example being Hitler). Yes, mutations happen and add new traits to the gene pool. No, it doesn't change the fact that we are human beings. What I'm trying to say is that there is no norm besides one undeniable similarity between us: our DNA. We're all different from one another, and yet we are all the same. Think about all the different varieties of dog there are. They're all still dogs.But to steer myself back on topic, what is the norm? Blue eyes were a mutation that deviated thousands of years ago, should they mean that you're not human (I hope not, I have them)? Now they are an accepted norm. White skin is a mutation, now a norm. Are all mutations disorders? No, Walker's one was an advantage. Should they result in our removal from the human race? How much difference is necessary?
This entire thing may sound a bit like I'm trolling but I believe that this way of defining humanity, whilst perfectly acceptable as an opinion, is on very shaky ground in my book.