When a Feruchemist stores weight, what he is really storing is not the weight itself, but something about how gravity interacts with your body. Yes, I know I explained that horribly, but my point is, Feruchemy sometimes stretches these attributes.
I'll answer this one first because it will help in answering happyman and because I was actually going to mention this in my last response but it felt tacked one. I'm glad you mentioned it.
I think that, rather than storing gravity(Which had been my idea as well and always irked me) I think that it would make more sense that Storing(I think I'm going to capitalize Store and Burn when talking about Feruchemy and Allomancy, respectively. Less confusing) in Iron actually stores the Feruchemist's Higgs Bosons rather than gravity itself. I wouldn't put it past Mr. Sanderson to have thought it out that far.
For those of us who have not had an education in physics I'll give you a simple explanation of what the Higgs Boson is: The Higgs Boson is the particle that gives all the other particles their mass. It sounds odd, but it's currently the best idea we've got for why everything has mass. The more massive an object is, the more gravity it generates/space it distorts, and the more "weight" it has. It would make sense that Storing 'weight' is actually Storing 'mass' in the form of Higgs Bosons'.
I have a sneaking suspicion that that is how Mr. Sanderson worked it out and he just never bothered to elaborate because he's never needed to.
For more reading on the Standard Model:
http://en.wikipedia.org/wiki/Standard_ModelIf that's too much, here's the easier one:
http://simple.wikipedia.org/wiki/Standard_Model (That's the one I sent my mom.)
Are you saying it's a deep philosophical objection because you believe in a fundamentally block universe? Why tie your imagination to that loadstone? It's just a mathematical model, and hardly the only way to view time.
It isn't a philosophical objection, it's a reasonable, rational objection. Under NO circumstance is time an attribute of anything other than itself and space.
Time isn't mediated by a force boson, nor is it ANY type of force/particle. Time does not depend on matter, it's an intrinsic property of our universe and has no connection to matter at all, let alone, biological life.
I understand that there are many ways to view time(Including the multiple time dimensions theories[Hypothesis'?] and whatnot), but in none of the ideas that aren't completely off the wall speculation, is time an attribute of matter.
As for my imagination, more often than not, it's tied to reality and I rather like it that way. If something is completely magical, though, I can go with it just fine.
Also, so you know, it's not my intent to be or appear hostile but I have some kind of drive for others to understand my position as it is, not the way they think it is. It gets me into arguments when I wont let something go because there is a misunderstanding, however small. Might have to do with my obsessive compulsiveness.
I always feel like there's more to say.