originally posted on 3/27/12
The focus of our discussions on Pesach is about beginnings. In reality, though, Pesach follows Purim and the days before Pesach are affected by the fact that they are also the days after Purim. In our modern world, Pesach follows Purim; Pesach's celebration is affected by the prior celebration of Purim.
Nishma's Rabbi Hecht discusses the possible significance of this flow of time at http://www.nishma.org/articles/insight/spark5756-12.html