Deprecated function: Optional parameter $path declared before required parameter $arg is implicitly treated as a required parameter in include_once() (line 1439 of /var/www/quickstart.cals.arizona.edu/includes/bootstrap.inc).
Opportunity Cost
The value of the next-highest-valued alternative use of that resource. Example: If you spend time and money going to a movie, you cannot spend that time at home reading a book, and you cannot spend the money on something else.