Matthew Cleevely is a a PhD student who says he was, until very recently, a loyal Apple customer for the past 11 years.
The gist is this: Cleevely bought a MacBook Pro with a screen problem.
Annoying lines would appear on the screen and not go away.
He looked up the problem online and found that other owners were having the same issue. It's called ghosting.
One of the reasons Cleevely bought this particular MacBook Pro was that it's supposed to have a "retina" screen, so obviously the screen's performance was important to him.
So Cleevely took his computer into the Apple Store to see one of Apple's customer support people, a so-called Genius.
The Genius he saw was not very helpful. He performed a super-quick test on Cleevely's screen and found that it passed.
He refused to help any further.
Cleevely went home and came up with a similar, but slightly modified test that showed the MacBook Pro does indeed have a screen problem.
But Apple's bad test for his screen isn't really the problem he now has with the company. He says:
My problem isn’t Apple’s test.