could someone explain Mathematica's protests about division by zero here?

*To*: mathgroup at smc.vnet.net*Subject*: [mg69681] could someone explain Mathematica's protests about division by zero here?*From*: "Chris Chiasson" <chris at chiasson.name>*Date*: Wed, 20 Sep 2006 02:44:58 -0400 (EDT)

Assuming[N>0, Refine at Min[829046.769691507`1.8176125240919663*N, 1.75`1.7378880703663873*^8* N*(1-Sqrt[ 1+(0.1600000000000000944`3.096910013008058*(-0.5`2.\ 3979400086720393*m*X+X^2))/m^2])]] -- http://chris.chiasson.name/