If the project is complex, allocating more RAM will increase speed, performance and reliability. This program requires a minimum of 18 megabytes of RAM to operate. This is why Macintosh systems are configured to handle lots of RAM and to use it efficiently. Programs are becoming even more complex and can handle more complicated tasks. As the complexity of the programs grow, so too do RAM requirements.
Time is money.
Because graphic programs require so much RAM, it makes sense that one would need a lot of RAM to run several programs at the same time. When you look at these factors, the price of RAM begins to sound like a good investment. Conversely I have heard many designers lament that they don't have enough. ROM is nonvolatile memory which means that when the machine is turned off, the data contained in the ROM is not lost. In this modern design age, a designer can now layout, typeset and design a full-color brochure, from start to finish, on a single computer system.