Hughes wrote:
Humans with severe mental retardation have roughly equivalent levels of awareness and intelligence as some animals, and both are often incapable of entering social contracts. Are you disputing this? My comparison--which is by no means original, I must say--was NOT meant to suggest that humans with severe mental retardation should be treated worse than they, but rather that animals should be treated better than they are.Issues of terminology aside, you simply can't expect people to consider what is potentially a family member, a friend or even themselves in the same light as a farm animal or a pet.
If I was bringing my "A" game I wouldn't have even made the argument from marginal cases. http://en.wikipedia.org/wiki/Argument_from_marginal_cases
The argument for animal rights can be made as simply as this:
1. Causing "unnecessary" suffering to animals is wrong (most everyone agrees with this general statement)
2. Human use of animals for food, clothing, and entertainment causes suffering.
3. The uses listed above are not "necessary" by the most liberal definition of the word. (Animal research is the only use with a slight claim to "necessity." I still think its wrong, but for the sake of the easy argument, I'll avoid it)
4. The uses listed above are wrong.



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Issues of terminology aside, you simply can't expect people to consider what is potentially a family member, a friend or even themselves in the same light as a farm animal or a pet.