Professor Smith : Research has improved tornado prediction , but it remains imprecise , flawed . He says warning speed , false alarms change little . People still die . We must do better . He says synthesis of research , and observation will help . Communications must improve . The extraordinary courage of teachers . Wurman : Public must heed warnings , build tornado - proof shelters , to prevent deaths to people .
Professor Smith : Research has improved tornado prediction , but it remains imprecise , flawed . He says warning speed , false alarms change little . People still die . We must do better . He says synthesis of research , and observation will help . Communications must improve . Wurman : Public must heed warnings , build tornado - proof shelters , to prevent deaths to people .