How literal is this phrase?

Sample examples at http://tinyurl.com/is-it-lit

ivory tower:

Definitions:

  1. a state of mind that is discussed as if it were a place

Examples:

  1. . " To get two letters passing it further down the line underlines the rather ivory tower approach by senior officers . " Yesterday , a police spokesman said : " Bedfordshire
  2. recently the globalization adversaries emerged ; the experts at the universities had to abandon their ivory towers and present their research at the market place in order to rebuild public confidence .
  3. may seem to be with this exhibition a case of moving art out of one ivory tower ( namely the gallery ) into another ( the theatre ) , I for one
  4. commitment to alleviating poverty and oppression . Guttierez regarded theology that was created in the ivory towers of European and North American Universities and Seminaries as being of no relevance to the
  5. in ' 87 ) , we did n't do videos , we hid in our ivory tower , waiting for people to recognise our genius . Now , that can be fun

Note: Please select the answers below carefully based on the definition which occurs frequently in the examples

Step 2: score of 0-5 for how literal is the use of "tower" in the phrase "ivory tower"
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