Time travel is a real problem. Here are some answers:
Q: What about the Grandfather Paradox? Is it really that bad?
Q: Can I just time-travel to ancient Egypt and be the pharaoh I always wanted to be?
It's a real thing, and it's a real problem. Essentially, it states that any events that could have occurred must have occurred, and any events that could have not occurred must not have occurred. It's like, if you go back in time, you'll always end up with the same outcome. It's the ultimate time-traveling Groundhog Day.
Time-traveling to ancient Egypt: Because who needs a 401k?
Time Traveling Tuesdays: Because who needs a 9-to-5?
Temporal Solutions: Because sometimes you just need a good lawyer