Per this Wikipedia article, the average human is about 65% oxygen, 19% carbon, and I'm going to ignore the rest.
Per Wolfram Alpha, a typical cubic meter of air has 270 grams oxygen and 160 grams carbon. Comparing to the ratios above, oxygen is the limiting factor.
One Riker (80 kg) requires all the oxygen from (80 kg x 65%) ÷ 0.27 kg/m3 = 192 m3 of air. So if you beam Thomas Riker into a very large living room (8 x 8 x 3 = 192 m3), it would have enough atoms to build his body, but then he'd asphyxiate because all the oxygen was used up. That said, a tennis court (~800 m3) would be sufficient.
mirrored back to point A where it used ambient particles...
I always wondered about that. Where do all the extra atoms come from?? Most rooms don't have ~80 kg of carbon, hydrogen, oxygen, and nitrogen lying around. (Yes, some of those are in the air, but nowhere near enough.)
Unless, by coincidence, Thomas was beamed into existence next to a walk-in freezer full of meat.
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.
There's the short story "A Colder War" by Charles Stross. Among other things, there's a reference to a real-life nuclear weapon concept called Project Pluto. In the story, it turns out it was built to try and kill Cthulhu.
So... maybe that's the goal of Sundial? Cthulhu would be a valid target for a weapon that ludicrous.
Otherwise, I agree. "The fuck is wrong with us" is the only valid conclusion.
I switched to Ubuntu a few months ago, and all my Steam games work just fine. Never looking back.