Sometimes, it’s not about what you say, it’s about how you say it. Your tone of voice says a lot about how you actually feel and what you actually mean, and a group of researchers from the University of Utah and the USC Viterbi School of Engineering have developed a program that uses your tone to determine whether or not your relationship will last. By listening to conversations between couples and analyzing the tone of voice they use with each other, the program is able to predict whether or not couples are right for each other with 79% accuracy, which is more accurate than therapists.