I agree, a lot of great insights on this thread. The writers have been illustrating the theme that our choices and experiences make us good or bad since season 1, when they showed Jimminy’s/Hopper’s origin story.
We may not get to learn more about Henry Sr. or Eva. There are already so many characters in the mix and every storyteller has to edit. There are always gaps that viewers have to fill in with their own experience and imagination. As long as the gaps are not about central characters and main plot points, I’m fine making a few leaps (and its even a fun part of having a fan forum in which to discuss those leaps). Otherwise, the “gap” is a mystery that the show ought to reveal at some point, or a plot hole that we fans will pick apart.
This is only a clip of Act 1, so who knows what else we will see in this episode, or down the line. I can’t wait to watch more!
“If I had a world of my own, everything would be nonsense. Nothing would be what it is, because everything would be what it isn't. And contrary wise, what is, it wouldn't be. And what it wouldn't be, it would. You see?” -- Lewis Carroll, Alice's Adventures in Wonderland & Through the Looking-Glass