So there were 2 men sitting in a cave, lost, philosophizing about what this cave was all about.
One said: Hey, I discovered this note here, says: “Trust me – this cave is dangerous. Get out now.” Sounds good to me. And those bones seem to support what the note says! I’m leaving.
The other said: No way, Jose. How can you believe that note!? And who knows what happened to those bones! I’m staying. And besides, it’s nice and comfortable here.
Jose left, believing the note… went on to find a green valley full of running water and food to eat.
Ike stayed. Next day the lion above him woke up and ate him.
The story happens every day. The world is full of Ikes, philosophizing to their hearts content, unaware of their doom, not looking at the evidences around them that lead to safety.