To begin with, Jews not herded into Pale. Pale is where Jews living when Russia aquire such territories as in Ukraine and Poland. Thus they ordered to remain and not migrate further east, and again that apply to villagers not professionals. One such reason is the already land hunger in Russia proper.
"To begin with, Jews not herded into Pale."
The truth:
http://www.jewishvirtuallibrary.org/jsource/History/pale.html