Daniel Mann, Esq. speaks about how halacha in modern times grapples with the issue of wills.  He begins with the halacha in the Torah which dictates how property should be distributed and how it developed in the mishna/gemara and through to the shulchan aruch and Rema and then to modern day poskim.  What rabbinic attempts were made to find solutions to create a system that better matches common law?  What are the advantages/disadvantages of each solution?