Shankar means mixed part. 3 souls play part. Everpure Shiv, rajopradhan Brahma (the half moon on his head) and the impure bodyholder Ram. Prajapita is when all souls accept him as Father, i think Brahma then should be complete. Baba says the easiest method is to remember Narayan because it is a complete form and it is the aim.
Let us assume everyone has had different experiences with BK, but all know little bit of BK terms. Who is it that is explaining in Murlis is matter of faith. In a BK center a mother a Sister or Brother will read the Murli and apply its own understanding, even more ... understanding can be on them /mother, Brother Sister/ sitting on the gaddi, giving drishti or reading the Murli that they are god’s instrument. Shiva enters them. Faith if Shiva at all exists, if it can enter etc, what is the speciality of his personality all of these are all personal experience. How would one accept and approach the Murli is a matter of difference and somewhat ... a choice, isn’t it.
However ... apart from all of these ... one can assume from all BKs or ex-BKs, PBKs, non-BKs there will be one such a person that will like the most, accept the most, follow the most, understand the most the Murlis. Just presuming Shiva exists, he is the narrator of the Murli and he does such acts as he has described about himself in the Murli then the question may be asked would he prefer to enter this child better, or other children better.
He would definitely choose entering a child that has faith on him, and on having faith is firm. He would less probably like to enter such children which are as stone and mud as Baba says staying as a wall of obstacles on the path of Gyan or on receiving a little kick of Maya would break away from the path of knowledge.
So this child with his understanding, his faith on Murli, and bestower of Murli, way of approaching The Knowledge, would he be able to contaminate others with faith, or with he contaminate him with faithlessness. He would share faith. And even a doubtful intellect does not doubt that faithful intellect will victorious and doubtful intellect will be destructive.