STMS DOUBT

Hi ,

why we are not sharing /usr/sap/trans directory to the 3rd system landscape.

say dev,was,prd are the 3 system landscape..pls tell me why we are not sharing (unix or windows any yhing) to the prd system.

if u are saying we have to share then what is the use of transport layer and routes....what ever request we are creating in dev server should go directly to prd righ? because we are sharing (if u say we have to share).

pls clarify my doubts.

thanks in advance.