Havdalah is like a privacy curtain. In contrast to a wooden shutter which obscures all light, a sheer curtain is made from translucent fabric and allows the light into the home. With sheer fabrics, people from within get an outside view but passersby are prevented from peeking into the home. Havdalah too dims the Shabbat light and adjusts it, allowing the Shabbat light into the week. Now, the weekdays can gaze at Shabbat and enjoy its holy view all week long.