I'm not even trying to weigh in on the debate, I'm taking issue with the use of the word "designed" (while hopefully avoiding a religious debate!). You can't use teeth shape to argue that nature has an "intention", it's purely reactive to our circumstances. When circumstances change, we will change.
---------- Post added 2012-05-05 at 01:47 AM ----------
I think what the previous post was saying was that 2 different groups of human ancestors had different jaw/tooth structures that suggested they ate different diets. The one that was not like us died while the other lived so it concludes that being able to eat meat and plants is better for survival.
never been able to wrap my head around someone going vegetarian. I love meat way too much. I'd give up sex before i'd give up bacon, then again. I guess giving up sex lately hasn't been much of a choice. Still, I love me some bacon.
Good luck to you though, i hope it works out for you.
I couldn't imagine going vegetarian.
Why fight one of natures most basic ways we have evolved?
I think it's hilarious that people try to fight the fact humans can/should eat meat. Make all the decisions about your own lifestyle as you want just don't twist reality to try and convince/lie to other people to try and lord your opinions on others.
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Also if you look at big cat teeth, they look a lot like ours but they have huge canines and tiny incisors.
Of course, because horses alot bigger and weight 500 kilos. And still they don't eat big apples. They eat mainly small ones, which fit in their mouth. Even your horseman instructor will tell you never ever feed big vegies to the horses. In nature the horses obviously eat bigger apples and even without sharp fangs they manage to bite pieces of the apples and eat them piece by piece. Alone that makes me thing that sharp front teeth don't have anything with eating vegies.Do you know how much bigger a horses teeth and jaws are than a humans?
Thats interesting topic to discuss though. When humans developed weapons and such, our evolution basically stopped. We are very crude, not finished inventions of evolution. Our minds overcome the power of evolution. We cant run and hide properly, cant kill, cant even eat veggies like more developed creatures.So what you are saying is because we are capable of using our inventions to over come things that other species in the wild can not that makes us optimized meat eaters? I think that just makes us able to skip the part most people would pass on if they had to choose.
Whoever said fats don't make you gain weight is rather foolish. If eaten in great quantities bad fats can be really horrible for you. 1 gram of protein or carbs equals about 4 calories. 1 gram of fat is 9 calories. You obviously need some good fats, but don't fool yourself into thinking that eating a ton of fat is healthy/will make you lose weight. Low carb diets often allow you to eat as much fat as you want because it promotes feeling sated and because you're not eating any carbs your body is forced to burn fat for fuel so the calories don't matter as much because you will lose weight faster than you will put it back on. Meat also has a higher thermic effect than other foods, causing you to lose more weight. As soon as you stop that no carb diet and go back to eating bread you're going to put all that weight right back on if you're still piling on the fats and calories.
Wikipedia is not a reference for anything.
I could never be a vegetarian. You can show me all the sad cow videos you want, but they taste too good. Now, I'd never eat it if you slaughtered and cooked the animal right in front of me, but that's more because I'd feel sick rather than any moral reasons or pity. Yeah, it's bad things have to die. Not my problem though, that's the way the world works. I hope the animal has as a humane death (if that even makes sense) and lives the happiest life possible, but I won't shed a tear if it doesn't.
Last edited by Larynx; 2012-05-05 at 07:18 AM.
Most of the problems you are pinning on evolution are more likely the fault of the system we've developed, which by the way has been a huge part in what has allowed us to flourish. Just because not everyone could survive 2 weeks in the woods anymore doesn't mean evolution stopped, especially since for most of us they're completely irrelevant skills. The path of human evolution has changed and while it may be different had someone not had the bright idea to stab a buffalo with a pointy stick it's still not entirely dissimilar to anything we'd see in a more natural world.
Our minds didn't overcome anything other than our environment and our fellow creatures that cohabitate it with us. Our minds are a direct result of evolution and arguably one of the better things it's come up with to date in terms of a creature's survival.
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A basic tenant of biology is that enzymes can modify the heat (energy!!) or pressure needed to break molecular bonds thus increasing the rate of these reactions. Processes that in a lab would take temperatures that would burn us to a crisp are occurring right now in our bodies at a balmy 98.6 degrees, give or take a few. Our bodies are full of enzymes that "do" nearly every single biological process in our bodies. It's ridiculous to think that what goes on in a simple calorimeter can accurately predict how a potential unit of energy will be processed by each and every persons body. If you and I both eat 1000 calories as determined by a calorimeter I may be more efficient and actually use 800 for energy while you only use 700 and vice versa. The balance going to growth, repair, breakdown, etc.
The rest of the food, along with it's potential calories, is used for other biological functions I've already described. What about if I eat an 800 calorie meal and then go climb a mountain for six hours burning 5000 calories? Did my calories in = calories out? Nope. What if you climb the mountain with me but are in better shape and more efficient at using energy and you burn 4800 calories? Yes, these are simplistic examples but they serve to show the calories in calories out model is innaccurate.
In the context of a bomb calorimeter, yes. In the context of a human body or any other animal, no. And most definitely not within the context of fat storage vs burning.A calorie IS a unit of energy, its finite, defined, and unchanging.
I think maybe we're both saying the same thing, just arguing semantics. lol
---------- Post added 2012-05-05 at 12:22 PM ----------
The implications in your statement is that Evolution's goal is perfection. It's not. It's simply a natural process that occurs without direction or plan. Sometimes it improves fitness (genetic fitness not physical fitness) sometimes it doesn't. I would argue that our minds are a beautiful example of evolution rather than something that overcame it. We use our brains other animals use their brawn. It's all because of Evolution, for better or worse.We are very crude, not finished inventions of evolution. Our minds overcome the power of evolution. We cant run and hide properly, cant kill, cant even eat veggies like more developed creatures.