So tell me, within the context of what we are discussing here, are you saying that Michael was truly angered, truly enraged at Frankie?
I'm glad you raised this question b/c it's one I've wanted to discuss here before.
I think he was testing Frankie, but he was trying to "encourage" him as well--that is, encourage him to settle the problems with the Rosato bros. But some of that rant was probably true anger on Michael's part. He was pretty damn pissed about the fact that he, the Don of the Corleone Crime Family, had been shot at in his HOME, and he wanted to make sure Frankie (a logical suspect in the shooting) was pissed as well.
