Comment Re:isn't the ice supposed to be melted by now? (Score 1) 209
How do you measure success in predictions? I would think if you are within the projected range then that is a success; while they did go outside of the projected range YEARS LATER it is after all a detailed simulation of a problem so complex you can never project that far in the future. So I would say their success was limited up to that point in time when the bounds were breached; guess I'm remembering something else... I was sure it was the high bound not the lower one... So next time, the projection will be for a shorter span of time (or they will just include a range so great that it is kind of useless after a few years.) They can make a projection that is almost impossible to be in error by extending the max/min projections and so then it can't be said to be a wrong prediction. Even then, they still had confidence levels so even in error one could say they were not incorrect. It's not like we can reboot the planet and see how many times out of 100 it falls outside the confidence level more than 5 times. You can do the odds for the lottery and say with high confidence nobody will win it (not absolutely but such a low number that it's nearer 0% than 1%)... but eventually somebody gets the numbers... and it's outside of your high confidence level.
As they get better at simulations they might greatly improve but this is still a vastly more complicated system they are trying to model where even 100% knowledge can't solve for all the chaotic variables being simulated - all one can do at that point is know at what point the information is useless because the projected range (due to chaos) is too vast. One one side you have simulated models-- which are extremely limited and on the other side you have broad understanding that describes long term macro level behaviors that are kind of outside the realm of simulation.
Fluid Dynamics may be something god doesn't understand (that's a reference to a physics joke,) but the macro level trends can be understood far better. Newtonian physics is macro level and works great but at the micro level it does not work anymore (lets not ruin the point by getting into other perspectives where it breaks as well.)
seismologists: good point. predictive geology. The one I knew only ever seemed to crush various kinds of rocks. But there you still have two sides-- the one trying to do immediate predictions by constructing models and the other one looking at the plate tectonics and how over 1000s of years how much grinding is going to occur, how fast it moves, etc. the long term one is probably going to be easier but less useful.