This question evaluates your ability to locate information in the index of an eBook using a Basic search.

$1.$Go to the CSI library homepage and click on Databases.

$2.$ Click on "Databases A$-$Z$"$

$3.$Select the $$EBSCO eBook Collection$$ database $($under $"$e$")$

$4.$ Enter words Artificial Intelligence into the text box at the top and click the green "Search" button.

$4.$From the results page, click on the title, Artificial Intelligence and Software Engineering : Understanding the Promise of the Future, by Partridge, Derek

$5.$Scroll down the page to the Table of Contents.

$6.$Now, click the Index link at the bottom of the Table of Contents.

Question $1$: According to the index, how many times is Exploratory System Design $($ESD$)$ mentioned in this book?