According to our current understanding of time and physics, time travel is generally considered to be impossible, regardless of whether someone is living or not. The concept of time travel often involves moving backward or forward in time, beyond the normal progression of events.
Time travel is a topic explored in science fiction, but it has not been demonstrated or proven in reality. The laws of physics, as currently understood, do not provide a mechanism for traveling through time in the conventional sense.
There are various theoretical concepts and ideas within physics that explore the possibility of time travel, such as wormholes, time dilation, and the theory of relativity. However, these concepts are highly speculative and are not yet supported by experimental evidence.
Additionally, if someone is not living, they do not possess the physical existence or consciousness necessary to engage in any form of travel, including time travel. Time travel, if it were ever possible, would likely require some form of physical or conscious entity to undertake the journey.
In summary, based on our current scientific understanding, time travel is not considered possible, regardless of whether someone is living or not.