Pager
"Okay, Jackson, let's look at the last setting in the second view edit column: pager. We'll be finished soon.
Pagers allow views to display a lot of data without creating a page that could be infinitely long. Drupal defaults to showing 10 items per page and using a full pager. I know from experience with my old site and building views so far that if I set the number of items per page to 0 when I create a new view, the pager will be disabled, and the view will display everything. For my test site with a few properties, this probably is fine, but if I were on the national multiple listing service with maybe a million properties, showing all them on the same page would take forever to display and be useless to navigate.
Replacing Drupal 7's mini pager
I also remember Jim saying that the default pager is a resource hog that will significantly slow down my site when the total possible number of items to display gets big as the pager first counts how...