What are the advantages of housing a telescope inside Mountain observaties

London includes a quote about john thornton as he is observing hal attempt to motivate the exhausted dogs "it was idle, he knew, to get between a fool and his folly". if the word "idle" is defined as "of no real worth, importance, or significance", what does this statement mean with regard to hal? who is the fool? what is hal's folly? why would john thornton think it of no real worth or useless to intervene?

In which case did the court rule that flag burning was not illegal under the first amendment? a-us v. fields b-new york times v. sullivan c-texas v. johnson d-us v. alvarez

How did the language of the gettysburg address differ from the language in the secondary source about this speech?