The ethical implications of changing the past are numerous and complex. Firstly, altering the past can have unintended consequences, potentially harming innocent people or leading to unpredictable outcomes. Secondly, it raises questions about the autonomy and agency of individuals whose lives are affected by the alterations. To address these concerns, time travel should be subject to strict regulations and guidelines, ensuring that any changes to the past align with universally accepted ethical principles and are made in pursuit of the greater good.
You are a renowned scientist in a universe where time travel is possible. What do you think are the ethical implications of changing the past, and how would you address them?