Best Use of Math Textbooks

I had an ergonomics consultation last week, in which the specialist suggested that my monitor was too low. She said that I needed to raise it 6-8″ to be at an appropriate height, and since it will take more than a week to get the monitor stand, she had an alternate solution:

I have over 50 textbooks on my bookshelf. I chose five that seem to be more effective at supporting my monitor than math education.

My colleagues are getting a good chuckle out of this.