[NOTE: as the structure is being refined, some of the category names might not match the outline. This will be remedied whenever the structure becomes stable.]
1. The earth is warming
A. There is a clear trend of warming
i. direct temperature measurements
a. atmosphere [satellite, balloons]
b. surface [stations]
c. ocean [buoys, satellites]
ii. proxy temperature records
d. ice cores [antarctica, greenland]
e. tree rings
f. other [tree rings, sediment, ice cores]
iii. ice sheet behavior INCOMPLETE
g. Greenland TRUE
h. Antarctica TRUE
i. continental glaciers
j. sea level
k. permafrost and lake and river ice
iv. life TRUE
v. other [coastal wind speed, sea ice]
B. The warming is "special"
vi. rate [historically; accelerating]
vii. scale [historically]
viii. solar system [recent trends]
2. The warming is significantly anthropogenicC. Natural explainations for the warming are not sufficient
ix. solar [spots, flux, cosmic rays]
x. ice age departure
D. Anthropogenic sources can explain non-natural contribution to the warming
xi. greenhouse gases
a. Are atmospheric GH gases increasing in concentration?
b. Are people responsible for the increase?
c. Can GH gases cause the GH effect?
xii. is the proportion of warming due to anthropogenic causes dominant?
3. Something should be done about itE. it is possible to solve
F. it is worthwhile to solve
Logically, we can say: AWG if and only if A and B and D. AWG mitigation action is required if and only if 3 [contingent on E and F] and D. Additionally, the hierarchy of the logic is top-down, meaning that questions v through xi are irrelevent until questions i through iv have been established, and so on. I hope that you can all help me flesh out these categories to include more crucial steps in the logic, particularly in part 3.
A complete proof of AWG would flow like this [using ^ for the logical operator AND and => for "IF...THEN" and <=> for "IF AND ONLY IF" and semicolons to seperate clauses]:
(i ^ ii ^ iii ^ iv) => A; (v ^ vi ^ viii) => B; (A ^ B) => 1; (viii ^ ix) => C; (((a ^ b ^ c) => x) ^ xi) => D; C ^ D=> 2; (1 ^ 2 ^ E ^ F) <=> 3.
3, of course, is the only thing that matters.
This will be the logical structure we will follow once it is set in stone. Of course, it is possible to remove a bullet later on by arguments such as "the scale of the warming is irrelevent because..." but we will treat those instances as proven bullets to simplify the process. Help me out with this now so we won't have issues with it later!
4 comments:
THis proposed argument has all the necessary components of a sylogism, and nothing else, so I believe it is the ONLY relevent structure to walk on from here [politicized rhetoric, emotional responses, chaotic/hard-to-search data and studies, etc] to there [clearly-articulated and objectively-supported presentation of global warming as either fact or myth]. So bombs away. Well done.
V.
I refer readers to John Houghton's Global Warming, Cambridge University Press, 2004, for a similarly-structured argument. It remains, to my knowledge, the best of the compendia of scientific research and non-political/emotional approaches to the topic. It requires basic physical science knowledge to read, but the structure of the argument per se follows trogonpete's proposal almost perfectly, and even the table of contenets is instructive.
V.
You've heard my comments in person, but my only reiteration is on the "the warming is anthropogenic" statement, which I think is too simple as stated.--the same way it's simplistic to say that coal causes coal trains to go fast. And I wouldn't make the comment if I didn't think it were a substantive distinction--the _degree_ of its anthropogenesis, if any, is the real question here.
Frog
yes, you're right. I tried to make that clear with bullet xi, but the main heading should give a nod to that fact. To tell you the truth, I was more interested in pithy and concise headings that factual comprehensiveness. Do you like it better now?
thanks for the comments, as always!
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