i like these movies and what they found was that that didn't work that well because people gave schindler'slist five stars. how could you not? it is a great movie and now that they have the streaming on netflix they can say yes we watched five minutes of that but then you click over to fast and furious that's what you prefer and a way this gets me back to the of what is the preference and should you trust me when i say that i prefer something more my behavior, do you want even though people don't believe in the way that they say that they will but there's a lot of value in taking them at their word and giving them that kind of agency debt just as a general principle you want people to make decisions about what they do. you don't want to have to behave in a certain way that then leads to business. >> host: businesses want people to get. the tension between the sort of commercial and civic dalia especially when you say you have to trust me when i say something you point to the idea there's two different meats to the commanding. there is to meet its reduced of the next five minutes and the nee

like these kind of movies but what they found was it didn't work that well because people gave schindler'sist five stars ethan -- how could you not? it's a great movie about the holocaust -- and so, now that they have the streaming -- now that so many people are streaming movies on netflix they can say to watch five minutes of that but then flip over to the fast and furious, so that is actually what you prefer and this gets me back to this thing out what is the preference? and should you trust me when i say that i prefer something or should you trust my behavior? i would argue that even though people be given the way they say they will find there is a lot of value taking them at their word and giving them that kind of agency that just as a general principle you want people to make decisions about what they do. you don't want to have to be given a start with it than -- >> host: businesses don't want that. businesses want people to get -- again, the tension between the sort of commercial and civic value. it strikes me when you say you have to trust the when i say something but you are pointi

jacob schindler spends his days battling kudzu. >> it is the mile a minute vine.ales about ifs don't close your windows, it will climb in your window and take your children. >> it was first used for erosion control by the u.s. government. it is spreading and is almost impossible to control. >> it kills the local growth. the only thing that winds up growing is more invasive species. >> experts have been trying to get rid of it. jacob, now 17, thinks he may have found the solution. his work started with a sixth grade science project. to grow kudsu on mars. >> what if i grew something fast on a planet where there is nothing. it became how can i eliminate kudzu in an environmentally friendly way. >> his solution is killing it with helium. a vine like this can be killed with a gas that goes into a birthday balloon? >> pretty much. >> he shopped that experiment, but first his mother was skeptical. >> the roots were dead on the helium. they were not dead on the oxygen and co 2. at that point, i thought, he has something. >> now, she is his biggest supporter. he is an exc