Ars Technica has an awesome takedown of the methodology, leading to the conclusion that the study is "suggestive" but hardly definitive. I have to agree with the reporter that the photo of the lab students looking "sciency" was indeed awesome, however.
I'm reminded of this comic, only backward.
I'm reminded of this comic, only backward.
no subject
Date: 2010-03-27 01:19 pm (UTC)Perpetual motion had to be impossible, or Conservation of Energy went out the window. Since everything in physics from Newton onward kinda needs Conservation of Energy (and Momentum), it was a given early on that perpetual motion wouldn't work. (Unless there's no friction, which is a different ball of wax. Oh, and Special Relativity pulled 3 conservation laws into a single Conservation of Matter-Energy/Energy-Momentum.)
Everything else fits into my, "Look at nature. Try to unify things into a common model. Then whack the bajeezus out of the model to try and break it." ^_^
My, "95% or better," statement more applies to statistical data. You can take a dataset containing nothing of points on a circle and fit a line to it that has 70% correlation to that data. This is just one reason why the bar is pretty high when correlating statistical data to a model. When the model is nonlinear, the idea of a "percent correlation" gets tricky; sometimes 95% can be too low.
And, really, percent-correlation is just a convenient number that says, "How much does this data look like noise?" The closer to 0%, the more the data looks like it's purely (Gaussian) random.