Hello all. I visit these forums infrequently, typically only when some question about the cosmere is itching in the back of my head that I need an answer to (or at least a sounding board for). Well, that time has come again. In what I believe is my only other post on the 17th shard, i asked about what would happen in shadesmar if a ship containing peoples from a particular cosmere world was passing through in space in the physical world (would a ship from Scadrial be towing a bank of mist, a ship from Roshar thousands of tiny beads?), as we know mistborn will eventually push into the world of technology and science fiction. A reply to my question stated that they thought travel to and from worlds would be through worldhopping, and I thought no more of it until recently.
But... how sure are we of that?
Presumably, the first books to show us cosmere space travel in detail will be set on Scadrial, and Scadrial is maybe the only world in the cosmere that we know does NOT require worldhopping to get to other planets, just through the nature of the magic present on it. In alloy of law, we saw how feruchemy and the technology of the southern peoples of Scadrial could be combined to lower the mass of an object, something which not only allows Alec's people's ships to fly, but throws the entire rocket equation out of whack (provided the change in mass does not have an effect on the chemical potential energy of the rocket fuel) and potentially allowing near light-speed travel. Scadrians are also the only peoples who may have a means to travel the vast distances to other stars without dying on the way, as cadmium could presumably allow for the construction of stasis pods for the crew, greatly limiting what supplies need to be taken on a flight.
Another point, the ones above from Sixth of the Dusk are... well... from ABOVE. They don't appear at the singularity, despite it being necessary to transition (and if they did appear there, I think they'd go straight home, Patji does NOT seem a hospitable place).
What do you think? Have i missed some Word of Sanderson on this, or are we working entirely on speculation? Any thoughts about why physical space travel could or couldn't work, or why worldhopping is or isn't how the peoples of the cosmere will travel to other worlds?