Would you believe Cassandra?

 Cassandra has a blessing that is really a curse. She can see the future, but no one will believe her. But even if you set aside the curse, it turns out she also did several things that made it less likely she would be believed. For one thing, her prophecies were opaque. When she revealed her visions, she spoke in language that was a little hard to understand. Even though she knew that the spaceship wasn't going to be a success they ignored her. Would you ignore the weatherman or a hurricane warning? How can we know that a person that we don't even know is tellings us the truth? Why do we ignore signs that can cause something serious?