Before the creation of Soylent, Rhinehart would spend approximately two hours on preparation and cleaning-up (Rhinehart, 2013, p.115). However, during his thirty days trial on living on Soylent, Rhinehart(2013) only needed less than ten minutes per day for all the food he needs to eat (p.115). Two hours easily become free time for him to do whatever he wants. In another trial of Merchant(2013), he discovered that he was capable of doing many meaningful things with his girlfriend instead of just having meals together (p.121). Compared to free time gained through Soylent, engineering students in Caltech particularly find Soylent useful since they do not have time for anything else including eating (Widdicombe, 2014, p.111). Almost all students agree on the fact that Soylent provides them more time either to studying or to do their projects (Widdicombe, 2014, p.112). We only have 24 hours per day, which means 2 to 3 hours of eating is ten percent of our time. If we do some calculation, all those time adds up to years - ten percent of our whole life. That is to say, by eating Soylent, we could actually live several years more than we could