Did Lisa understand life?

According to Wiseau, that's the twist!

She definitely did but couldn't face it.

This is the genius of Tommy Wisseau. No one knows for certainty the answer to this question. He made this film to make us all think about these questions. Questions far too deep to be answered simply with a ‘yes’ or ‘no’. I’ve watched this 30 times and can come up with a different answer each time as to whether Lisa understannds life. That’s the beauty of good art.
Lisa, to me, is what Fredo is in The Godfather. There are Layers to their personalities that the viewer isn’t meant to see