Why calculating death is taboo in the field of life science?

Because the energy field will shift, if you casually tell other people's bad things, others will change their escape and transfer it to you, and you and your family will be unlucky. A really smart fortune teller can't tell others' fortune, and it is accurate to tell others' fortune. Telling others' fortune is basically a job, so even if it is accurate, I dare not say it.