emember that time is money," wrote American Founding Father Benjamin Franklin. Waste neither, he added, "but make the best use of both." 1 The current addition to our body of knowledge is concerned with time and money. A careful examination of the article "Algorithmic Trading," 7 by Giuseppe Nuti, Mahnoosh Mirghaemi, Philip Treleaven, and Chaiyakorn Yingsaeree (see "Article Facts"), suggests that time and money may be very different subjects in computer science and engineering. Rather than have the kind of equivalence that Franklin suggested, they can point in quite different directions. 1 Algorithmic trading is the use of programs, often termed agents in the literature, to identify, initiate, and complete the purchase and sale of securities in electronic markets. It has been heavily influenced by a number of topics in computer science, including machine learning, logic systems, distributed processing, and cybersecurity.