yulerule
Can you Forge liquids, like-- Does that go into Bloodsealing, can you change their blood type?
Brandon Sanderson
OK, can you use Forgery to, say, change someone's blood type? Yes. Can you Forge liquids? A little harder to stamp liquids, so this kind of comes down to, can you--
yulerule
Like, if you have a glass of water and you put salt in the water can you Forge it or make it and make it--
Brandon Sanderson
This is possible, but it requires a few little workarounds. Obviously you can do it because you Forge somebody, and they're mostly liquid.
yulerule
But you're putting in on a hard surface.
Brandon Sanderson
Yes, in the same way that you would with thr liquid you would probably--
yulerule
Touch some ice?
Brandon Sanderson
No, you would probably take the cup, and make it part of the whole, and if you can-- Remember in the cosmere, it depends on how you view a thing. Is it a whole? Do you view this as a cup of water, or do you view it as a cup and the water? Do you view a person as a vessel and the blood inside them, or together as a person? And that perception really affects your magic. So it's possible, for instance, to Forge a cup of water, Forging just the cup is easier than Forging just the water.