The dichotomy of comfortable/uncomfortable gave me trouble. In real conversation "comfort" is a spectrum; just because you're not uncomfortable doesn't mean you're definitely comfortable. You could just be okay, somewhere in the middle. Yet here the answer relies on flipping uncomfortable directly into comfortable. Do I misunderstand English/grammar?

Thank you Mr. 305

The Disney argument is airtight. Assuming all the premises are true, the conclusion MUST follow.

The Tiger argument requires some inferences: namely, that tigers are mammals; and that animals that are aggressive are not suitable to keep as pets. These things are TRUE in our world, but they are not premises of the argument. In a world where tigers aren't mammals and everyone loves dangerous pets, the argument is in jeopardy.

The Trash Bin argument similarly requires many inferences. Unlike the Tiger argument, the necessary Trash Bin inferences risk being untrue in OUR world as well.

Tiger: Some people are convicted of crimes and sent to jail despite being innocent. Therefore, not everyone in jail is guilty.

Disney: Each burger at my favorite restaurant comes with a side salad. The available salads are garden and Caesar. Thomas ordered a burger with a side. Thomas did not order a Caesar salad. Therefore, Thomas ordered a garden salad.

Trash Bin: The sunscreen bottle on my desk is full. My arms are sunburned. It can therefore be inferred that I didn't put sunscreen on my arms.