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  • 2
    This is the correct explanation. Well done. Commented 2 days ago
  • 1
    What Robusto said. Commented yesterday
  • 1
    What makes this different from the answer posted earlier by Nuclear Hoagie? Commented yesterday
  • @jsw29 I explain the context behind why watermelon is mass and the others aren't, and give an (in my opinion, better) rephrasing that is parallel, but doesn't clash with the sense of the original, while also stating that the extra context may be unwanted, and therefore may be why it was avoided in the original Commented yesterday
  • @jsw29 Hold on, I had a brainwave. Edits incoming! Commented yesterday