1. How can Prateek just go and tell Gauri about the brain tumour claiming that she is his friend? There is this thing called DOCTOR-PATIENT CONFIDENTIALITY and it's not legal to tell her that. He could get his licence pulled because of that.
2. Samar has a brain tumor at the last stage? Which type of brain tumor, for god's sake? There are at least 6 (that I know of) types and each of them are different.
3. If he really had a stage IV brain tumor, he would NOT be standing, running and doing things in general. He would be undergoing radiation, chemotherapy, surgery to say the least.
Doesn't Balaji research at least a bit before showing all this pile of rubbish?