Mukkalam unarntha gnanai

There are people who can look into the past and the future. Is it logical, scientific?

Take for example, a doctor. The doctor is trained to diagnose diseases. If he/she is good at it and practice for a long time gaining experience, they can diagnose disease just by looking at a person. There is a Chinese story:

A famous Chinese doctor visited the emperor. He looked at the emperor's face and said that you have a serios ailment, which can be cured with medicines now. The emperor does not believe it as he has no discomfort and ignored the warning.

The next time, the doctor says, your disease has gone deeper and can be cured by sustained treatment. He was ignored again. The third time he was saying that a surgery is required to heal the emperor but he is still in curable condition.

The emperor ignored him this time too. After a couple of months, the emperor falls ill, when all other doctors fail to cure him, the emperor recalls the visiting Doctor's words and calls for him. When the messengers reached the doctor's place, he has already left leaving a note that the emperor's case is beyond cure.

If one learns and practices to look at the past and future of a person not just the present, is it not possible to know mukkalam?