Both the policy and guidelines documents indicate that computer resources may not be used to interfere with other users. Problems often occur when someone creates a program that does something lots of times. For example, if you write a program that looks at the same web page thousands of times, this will normally cause a problem. Both the servers that handle web pages, and the network that gets the pages to you, are designed for normal human use. They are not designed to cope with programs that ask for the same thing many times.
Networks can only handle a limited amount of traffic.
Rutgers has a fairly high-speed connection to the Internet. However smaller educational institutions and commercial sites may not have connections that are as fast. It is possible for a single person at Rutgers to do things that will effectively shut down network access for a smaller site. If you do this, you are liable not only for University discipline, but prosecution. If you start writing programs or scripts that use these tools repeatedly or in unusual ways, it is your responsibility to make sure that what you are doing will not cause trouble for the rest of the network.