Whoa, have you seen what just happened to interest rates!? Suddenly, after at least fourteen years of our financial world being mostly the same, somebody flipped over the table and now things are quite different.  Interest rates, which have been gliding along at close to zero since before the Dawn of Mustachianism in 2011, have suddenly shot back up to 20-year highs.  – Which brings up a few questions about whether we need to worry, or do anything about this new development. Is the stock market ( index funds, of course ) still the right place for my money? What if I want to buy a house? What about my current house – should I hang onto it forever because of the solid-gold 3% mortgage I have locked in for the next 30 years? Will interest rates keep going up?  And will they ever go back down? These questions are on everybody’s mind these days, and I’ve been ruminating on them myself.…