Some of the rules written in the death note state
Whether the cause of the individual’s death is either a suicide or accident. If the death leads to the death of more than the intended, the person will simply die of a heart attack. This is to ensure that other lives are not influenced.
Even though only one name is written in the Death Note, if it influences and causes other humans that are not written in it to die, the victim’s cause of death will be a heart attack
Besides the fact that I find these 2 rules to be contradicting ( correct me if im wrong) it still made me curious. Is or is it not possible to kill people indirectly with the deathnote. For example writing a Heart surgeons name during a operation. Or a pilot while mid flight.