Discussen 1

Geologists use the minerals present in a rock to identify not only the type of rock (igneous, sedimentary, or metamorphic) but also the specific name of the rock (for example, granite, chert, amphibolite). Of the many physical properties that geologists use to identify minerals in the field, choose one that you think would be the most useful. (Refer to your reading for the week and your explorations at the Smithsonian website.) Share your choice and your reasoning behind this selection to try and convince your classmates of your choice.

Discussion 2

For your initial posting this week, provide an example of fallacious reasoning, either your own or someone you know. Explain why the reasoning was fallacious (questionable premise, suppressed evidence, or invalid inference) and what the result of that reasoning was.