Joe Biden is standing in front of his official blue backdrop Thursday, framed by those white lettered reminders that he’s in his “Office of the President-Elect” – right where he constitutionally belongs. “Out of all the peril of this moment, I want you to know … I remain so optimistic about America, as optimistic as I’ve ever been,” Biden is saying. “… Come Wednesday, we begin a new chapter …” But as much as we want to be reassured by Biden’s words, we cannot stop thinking about what we know – and he knows – is mainly on our minds: At noon Wednesday, Biden will be taking the inaugural oath in …