Apple’s tablet is thin but Samsung has now produced a thinner one. They cheated a bit, by making the screen a bit smaller, 8.9 inches.
I don’t quite understand thin. Too much thin makes such a device harder to pick up for instance. Also thin means fragile. Shouldn’t something you want to carry be a bit sturdier? There is a thing called slenderness ratio, the ratio of thickness to length for a beam… Too extreme and it will be bendable/breakable. Some things are meant to be thin. Others are not. I don’t see much advantage to a computer being physically thin except to allow cooling through the surface and with ARM and even Atom, we don’t need that degree of thin.