@Kevin_Lin In J.Y.'s video explanation, he directly chains up selection of units and arbitrary, which in turn draws a valid conclusion that science is arbitrary.

The reasoning and logic is different in the video explanation than in the analysis. Is this flawed or not flawed?

Why is it considered partial support and not just support?

Something to note. AC A is an excerpt in the passage before Jazz was ever mentioned, so it's not possible for the author to have an attitude towards Jazz if it was never brought up in the text yet.

@ColinErickson You're a stud

Is the assumption "Tigers are mammals" more reasonable based off our outside knowledge of this to be true, or is it because it's simply less vulnerable to criticism than the other assumption?