If I tell you that 1+1=3, then you will tell me that 1+1=2. Why? . . . because you know better. If I tell you that the sky is pink, you will tell me that the sky is blue. Why because you know better.
Knowing better simply means that you have already learned from a previous experience. It means that you have already been equipped with a specific knowledge that places you in a more advantageous position.
For example, last summer I went to an amusement park. I wore a cute little sun dress and really high heels. . . of course! Yeah . . . I looked hot but getting on and off rides turned out to be a major task to make certain I wasn’t flashing the goods to anyone and my feet hurt for two days straight! Now, I know better! When it comes to amusement parks it is a low comfortable wedge and shorts for this bombshell!
Of course . . . knowing better translates to all aspects of your life . . . not just fashion! Live, learn, read, experience. Know better.
image: http://projects.hsl.wisc.edu/bumpy/clothing_images/2803671616.jpg