Understanding constraintsWhen someone learning Flutter asks you why some widget with width: 100 isn't 100 pixels wide, the default answer is to tell them to put that widget inside of a Center, right? Don't do that. If you do, they'll come back again and again, asking why some FittedBox isn't working, why that Column is overflowing, or what IntrinsicWidth is supposed to be doing. Instead, first tell them that Flutter layou
