Mm - hmm.
Right.
Show us the way , Bhaskara.
I guess the other thing is that um , yeah. I mean , when you 're asked a specific question and you don't even  Like , if you 're asked a Where - Is question , you may not even look  like , ask for the posterior probability of the , uh , EVA node , right ? Cuz , that 's what  I mean , in the Bayes - net you always ask for the posterior probability of a specific node. So , I mean , you may not even bother to compute things you don't need.