Takes

Pat Riley is an immortal time traveler because he has shut out all human feelings

Here's how I know he's not dead is because you have to have feelings to be alive in the first place. And since he has just shut out all of his feelings, then he can't possibly ever be alive or dead. Therefore, he'll never die. Therefore, he is a time traveler.

Pat Riley is going to die soon because it's taking him 10 days to write a single email

Pat Riley's going to die soon. He's still taking this Dwyane Wade thing pretty hard. And he said Pat hasn't spoken to Dwyane post-decision yet. He said, 'I've been crafting a very long email to him.' He's been writing an email for like 10 days now. I feel like that's the end. When you're just sitting there with an open Word document... Pat Riley's going to die soon.