perhaps the most stupid claim i've read, and i've read quite a few idiotic posts from leftist imbeciles.
Bigdavediode, You commented my four points: 1. history 2. physics 3. biology 4. geography Let's close the history point first. You posted a link to Medieval Warm Period. Cool. Warm Do you think / believe / know that the Medieval Warm Period's climate warming was caused by humorous Vikings / all remaining humans? Surely they did burn a lot of camp-fires thus releasing lots of CO2. Before you answer the questions of humans having anything to do with climate change, bear in mind the below little 10 year old child math. There live 6.5 billion homo sapienses on the planet now-a-days. They run, they play, they get bored, whatever. Assuming each average human weights 75 kilo (e.i. one average human has 75 litres in air), then the whole today humanity (all 6.5 billion people) has volume of 487. 5 million cubic metres (for you to better calculate 500 million m3). As you can easily calculate all humans can go into a small cube of 800m x 800m x 800m. For those who do not use the metric system all the humanity can go into a cube of 0.5 mile x 0.5 mile x 0.5 mile. The above small cube was intended to give you an idea of today volume of humans. Now, go back in time 1000 years and think if a significantly smaller cube (something like 80m x 80m or even less) + the whole fire-camps and heavy industry of this cube could cause global warming 1000 years ago? Please anwer this question; then we'll move on to more complex subjects. Regards
I didn't just comment, I destroyed your points. Yeah, it's confusing. Unless you've read even a paragraph on the MWP. I'll explain below. I don't. Did they? Let's see your proof. I do not think that they had a significant impact 1000 years ago. Look, I'll save you a lot of posting time. Just like your misunderstanding of how Greenland got its name, and your misunderstanding of ice in Antarctica, you've misunderstood the MWP. This period measured warming in Europe however it is likely that globally temperatures actually decreased. You see, people were measuring temperatures in Europe at the time, not globally. To summarize -- temperatures increased in Europe and dropped elsewhere. Thus your hand waving and breathless desperation to try and pretend that because some warming isn't caused by humans all warming isn't caused by humans is for naught. (By the way, the "proof" that because some examples are true therefore all examples are true is called a "faulty generalization" and is a "fallacy of composition." It's not logic and it reveals that you're not making sense. Now when will you answer any of my questions, or does this exchange just go one way?
You destroyed nothing. In fact you admitted in a sentence below that you do not think humans had significant impact on global warming that happened 1000 years ago. Come on, had no significant impact? Admit they had no impact at all!
Because there was no global warming that happened 1000 years ago. You can't wrap your head around the difference between "the planet" and "Europe." They are not the same. Look, here, I'll make this easy for you: http://iri.columbia.edu/~goddard/EESC_W4400/CC/jones_mann_2004.pdf Look at page 13 with the climate data reconstructed. Europe increases, everywhere else doesn't. How would I know that the populations causing deforestation and burning had zero impact?
Rest assured I will cover biology, including your deforrestation as soon as we're done with history and the little math I did to help you to answer my question. Let me rephrase my question: Did humans cause the warming at some parts of the globe 1000 years ago? Simple Yes or No.
Ah, okay, you wish to sidle away from your previous incorrect premise (global warming which didn't exist 1000 years ago) which I answered directly and succinctly to a new question that you think might give you a better shot ("warming at some parts of the globe.") My answer will depend on which part of the globe you now want to ask about. Regional climatic variations are quite possible, depending on the region. Does the fact that you have to keep running away from your arguments indicate to you that they might lack merit? As well, will you even answer a single question of mine as I have yours? Or is your argument so fragile that any questioning of it shatters it?
As soon as someone confirms that a handfull of tribal people burning fire-camps from time to time could not cause Greenland be hotter 1000 years ago than it is now, we will - as promised - tackle biology bigdave. Do not worry