There’s an old trader’s saying that the first one to know where the bottom is is the last person to sell there. But there are ways to get an idea where some key chart points to watch might be, so maybe selling the low can be avoided. The first level to note is the Christmas Eve 2018 bottom of 21,792. Next, with the Dow officially entering a bear market, the first major trend line was drawn starting at the previous bear market’s bottom, at the March 9, 2009 closing low of 6,547.05 (seems unreal!). Connecting the Feb. 11, 2016 closing...