n*1. In the future, I think people will go live on Jupiter. = Unrealistic
n*2 In the future, I think that they will make eye contacts that will make you smarter. = Unrealistic
n*3 I think that their will be flying transports in the cities. = Realistic (si on te demande pourquoi tu dis que c'est realiste, tu repondre que c'est car il y a deja des personnes qui sont en train d'essqayer de faire des voitures volantes)