If a person were to travel through time and change nothing, meaning they don't interfere with events or alter the course of history, there would still be several potential consequences and implications to consider:
Observer's perspective: The person traveling through time would experience a shift in their personal timeline. They would be able to observe past or future events, interact with people from different eras, and witness historical moments firsthand. This experience could provide them with valuable knowledge and insights.
Information gathering: By observing the past or future without altering anything, the time traveler could gather information that may be useful in their own time. They could potentially learn about historical events, technological advancements, or scientific discoveries that can impact their present.
Temporal integrity: The time traveler would need to be cautious to avoid any unintentional interference. Even seemingly minor actions or knowledge shared with others could potentially have unintended consequences or create temporal paradoxes.
Butterfly effect: While the time traveler may try to change nothing, the mere presence of a person from a different time period can have unintended consequences. Small interactions, conversations, or observations might indirectly influence people and events, leading to unforeseen changes in the timeline.
Personal growth and understanding: Immersion in different time periods could provide the time traveler with a broader perspective on history, culture, and the human experience. This exposure to different eras may lead to personal growth, enhanced empathy, and a deeper understanding of the interconnectedness of events throughout time.
Ethical considerations: The question of whether it is morally permissible to observe historical events without intervening is a complex one. Some argue that mere observation can disrupt the natural course of events, while others believe that non-interference is the most ethical approach.
It's important to remember that the consequences of time travel are purely speculative, as time travel remains a hypothetical concept at this point. The implications and outcomes would largely depend on the specific rules and mechanics governing time travel, which are still subject to debate and exploration in scientific and philosophical circles.