I must profess a certain curiosity as to your opinion. Certainly there was profound warming in some parts of the world, but, for example, the Bransfield Basin sediment core implies a period of profound cooling between AD 1000 and 1100 which coincides with some of the warmest periods in parts of the northern hemisphere (eg the Viking colonization of Vinland/Newfoundland. I've always been of the opinion that most of the regional patterns ave some interesting analogs in the ENSO cycle, especially when considered in conjunction with some of the evidence of 'super el nino' events in (for example) South America, and evidence of a persistent la nina pattern. Incidentaly, a number of authors have recently put forward evidence that suggests that the 'Little Ice Age' may have been triggered by the sudden depopulation and subsequent reforestation that occured as a result of the 'Black Death'. The basic idea being that with less people, reforestation occured and there were fewer paddies being tended consequently emissions fell sharply, and uptake rose triggering a drop in temperature (or something close to that anyway). Usually, but not always. I only recently had a debate with an individual that was of the opinion that the idea that greenhouse gasses caused warming violates the second law of thermodynamics - this while at the same time implicitly maintaining that a massive object could accelerate and deccelerate instaneously. I recently had cause to perform some risk analyses along these lines using data generated by computer models on the level of inundation generated by various events ranging from a 1 in 600 year Tsunami to a 1 in 20 year storm surge. My task was to convert these numbers into "The percentage risk of (location) being inundated to X meters over Y years" based on both current MSL and a 0.5m rise in MSL, where Y was 50 years and 100 years. Part of the source for these sorts of concern (as I understand it anyway) comes from the fact that even where I live there are areas that currently have a 0% chance of being inundated to some arbitrary level (over say a 100 year period) that with a 0.5m rise in sea will have a 90% chance of inundation to the same level, purely as a function of topography and proximity to the coast.