Well, we start the week with the S&P 500 at a new record. And here's one thing to keep in mind. New highs should be no surprise.One of every 14 days in the S&P 500's entire history, it has been at an all-time high. Of course, markets rise over time. They are up 70% of all years, 55% of all days, as a matter of fact.Still, it's crucial to know how we got here this time and where the hazards might lie as we look out at the markets for the rest of the summer. We did have a crescendo of selling in momentum stoc ...