On the GMAT, use “if” in a conditional sentence to show that one thing will happen if something else happens. Use “whether” to show that two alternatives are possible.
"It's kind of fun to do the impossible."
- Walt Disney
Ian Murphy is the king of the old-school computer hackers. In 1981, he and three accomplices broke into the AT&T phone system and changed its internal clocks so that customers would get midnight discounts in midday, while late-night callers got stuck with outrageous bills. For the incident, Murphy became the first hacker to be charged with a computer crime.