In recent years, digital touchscreens have replaced many of the buttons and knobs that control various functions in cars. But when Host Ira Flatow went shopping for a new car, he noticed that physical controls seemed to be making a comeback. But will the rise of technologies like voice recognition and automation make cars more button-centric, or less? Ira talks with car ergonomics engineer James Forbes and buttonologist Rachel Plotnick about the advantages and disadvantages of the physical button or knob, and what might lead an automaker to choose one type of control over another.Guests: James Forbes, professor of practice in the department of automotive engineering at Clemson University.Rachel Plotnick, author of Power Button: A History of Pleasure, Panic, and the Politics of Pushing (The MIT Press, 2018).Transcript will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.