If you don't research/investigate then you won't know. If you don't know would you be happier? Is knowing sometimes a bad thing?

So a guy says if we don't test we don't get results. If we don't get results we can't get upset. Maybe investigating/testing is the problem.

You can't get angry about what you don't know about. You can't become enraged unhinged furious deranged when results aren't what you want. There are no results so there is no problem. Why learn about things that will just upset you? Ignore avoid reject deny.