The biggest problem with time travel is nobody understands M-E when I get there. Yes, they all speak my language but the accents, jargon, phrases they just don’t stay the same over time. A simple cup of coffee today is the ‘devil’s drink” in the 1700’s so I wouldn’t be bringing that up especially if you’re trying to fit in. The accents are all F’d up and words like “bad” might be good today but definitely not in the past. In other words we’ve developed the technology to get us there but not the ability to actually communicate with language that is.