I expect you meant "it is something strictly between 100% and 0% and not particularly close to either one"
Yes, I do.
On what basis do you make that claim?
Earth has been warming up for a while (in terms of centuries) by now -- we're still coming out of the last Little Ice Age. On a more short-term scale for when we have direct instrumental data, I believe (from memory) that the current warming trend started around 1850 which is too early for CO2 to make a noticeable impact. And, of course, the graph of the global temperatures and the graph of the CO2 concentration in the atmosphere do not match too well.
The short answer is that it's complicated and the temperature trends do not look like they're driven solely by the very evenly increasing CO2 concentration. As to not being 0%, well, physics.
That doesn't answer the question, though.
Not directly, no, but it does imply that the answer will be different for different groups of people.
Note: Please see this post of mine for more on the project, my sources, and potential sources for bias.
I have written a couple of blog posts on my understanding of climate forecasting, climate change, and the Anthropogenic Global Warming (AGW) hypothesis (here and here). I also laid down the sources I was using to inform myself here.
I think one question that a number of readers may have had is: given my lack of knowledge (and unwillingness to undertake extensive study) of the subject, why am I investigating it at all, rather than relying on the expert consensus, as documented by the IPCC that, even if we're not sure is correct, is still the best bet humanity has for getting things right? I intend to elaborate on the reasons for taking a closer look at the matter, while still refraining from making the study of atmospheric science a full-time goal, in a future post.
Right now, I'm curious to hear how you formed your views on climate change. In particular, I'm interested in answers to questions such as these (not necessarily answers to all of them, or even to only these questions).